Display apparatus

ABSTRACT

A display apparatus includes: a display panel configured to display an image, one or more sound generation devices configured to vibrate the display panel to generate sound, a supporting member configured to support the display panel, a partition between the display panel and the supporting member, the partition including: a first side in a horizontal direction, and a second side in a vertical direction, one or more first pad parts on the first side of the partition, and one or more second pad parts on the second side of the partition, wherein a first of the one or more first pad parts includes a different material from a material of a first of the one or more second pad parts.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims the benefit of and priority to Korean PatentApplication No. 10-2017-0179948, filed on Dec. 26, 2017, the entirety ofwhich is hereby incorporated by reference.

BACKGROUND 1. Technical Field

The present disclosure relates to a display apparatus, and inparticular, to a display apparatus for vibrating a display panel togenerate sound.

2. Discussion of the Related Art

With the advancement of an information-oriented society, various desiresfor the display field of expressing information in accordance with anelectric information signal are increasing. Thus, research is beingconducted on various display apparatuses that are thin, light, and havelow power consumption. For example, the display apparatuses may becategorized into a liquid crystal display (LCD) apparatus, a fieldemission display (FED) apparatus, an organic light-emitting display(OLED) apparatus, etc.

Among the above display apparatuses, the LCD apparatus may include anarray substrate including a thin film transistor (TFT), an uppersubstrate including a color filter and/or black matrix, and a liquidcrystal layer interposed between the array substrate and the uppersubstrate. An alignment state of the liquid crystal layer is controlledbased on an electric field applied to two electrodes of a pixel region,whereby light transmittance is adjusted based on the alignment state ofthe liquid crystal layer, to thereby display an image. The OLEDapparatus, which is a self-light-emitting display device, has advantagesof low power consumption, fast response speed, high light-emittingefficiency, high luminance, and wide viewing angle.

A display apparatus displays an image on a display panel, and anadditional speaker for supplying sound generally has to be provided. Ifthe speaker is provided in the display apparatus, the sound generated inthe speaker advances toward a lower or rear portion of the display panelinstead of a front portion of the display panel. Thus, the sound doesnot advance toward the front portion of the display panel, i.e., towarda user who watches the image displayed on the display panel, so that itdisrupts a user's immersion experience. In addition, as the soundgenerated in the speaker advances toward the lower or rear portion ofthe display panel, sound quality is deteriorated due to an interferencewith sound reflected on the wall or floor. Furthermore, if the speakeris included in a set apparatus, such as television, laptop computer, orcomputer monitor, the speaker occupies a space that may impose arestriction on design and a spatial disposition of the set apparatus.

SUMMARY

Accordingly, the present disclosure is directed to a display apparatusthat substantially obviates one or more of the issues due to limitationsand disadvantages of the related art.

Therefore, the inventors have recognized the above-described problemsand have conducted various experiments so that, when watching an imagein front of a display panel, a traveling direction of a sound becomes adirection toward a front surface of the display panel. Thus, soundquality is enhanced. Through the various experiments, the inventors haveinvented a display apparatus having a new structure, which facilitatesto output sound so that a traveling direction of a sound becomes adirection toward a front direction of a display panel, thereby enhancingsound quality.

An aspect of the present disclosure is to provide a display apparatusincluding a sound generation device capable of outputting sound to afront direction of a display panel.

Another aspect of the present disclosure is to provide a soundgeneration device having a new structure for decreasing a wavephenomenon.

Additional features and aspects will be set forth in the descriptionthat follows, and in part will be apparent from the description, or maybe learned by practice of the inventive concepts provided herein. Otherfeatures and aspects of the inventive concepts may be realized andattained by the structure particularly pointed out in the writtendescription, or derivable therefrom, and the claims hereof as well asthe appended drawings.

To achieve these and other aspects of the inventive concepts as embodiedand broadly described, there is provided a display apparatus, including:a display panel configured to display an image, one or more soundgeneration devices configured to vibrate the display panel to generatesound, a supporting member configured to support the display panel, apartition between the display panel and the supporting member, thepartition including: a first side in a horizontal direction, and asecond side in a vertical direction, one or more first pad parts on thefirst side of the partition, and one or more second pad parts on thesecond side of the partition, wherein a first of the one or more firstpad parts includes a different material from a material of a first ofthe one or more second pad parts.

In another aspect, there is provided a display apparatus, including: adisplay panel configured to display an image, the display panelincluding: a first region, a second region, and a third region, one ormore sound generation devices in at least one of: the first region, thesecond region, and the third region, a supporting member supporting thedisplay panel, a first partition between the display panel and thesupporting member, one or more first pad parts extending from the firstpartition in a first direction of the display panel or the supportingmember, and one or more second pad parts extending from the firstpartition in a second direction of the display panel or the supportingmember, the second direction being perpendicular to the first direction,wherein a first of the one or more first pad parts includes a differentmaterial from a material of a first of the one or more second pad parts.

Other systems, methods, features and advantages will be, or will become,apparent to one with skill in the art upon examination of the followingfigures and detailed description. It is intended that all suchadditional systems, methods, features and advantages be included withinthis description, be within the scope of the present disclosure, and beprotected by the following claims. Nothing in this section should betaken as a limitation on those claims. Further aspects and advantagesare discussed below in conjunction with embodiments of the disclosure.It is to be understood that both the foregoing general description andthe following detailed description of the present disclosure areexamples and explanatory, and are intended to provide furtherexplanation of the disclosure as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, that may be included to provide a furtherunderstanding of the disclosure and are incorporated in and constitute apart of this specification, illustrate embodiments of the disclosure andtogether with the description serve to explain various principles of thedisclosure.

FIG. 1A illustrates a display apparatus including a sound generationdevice according to an embodiment of the present disclosure.

FIG. 1B is a cross-sectional view taken along line I-I′ of FIG. 1A.

FIGS. 2A and 2B are cross-sectional views illustrating the soundgeneration device according to an embodiment of the present disclosure.

FIGS. 3A and 3B illustrate a sound-generating method of the soundgeneration device with a first structure according to an embodiment ofthe present disclosure.

FIGS. 4A and 4B illustrate a sound-generating method of the soundgeneration device with a second structure according to an embodiment ofthe present disclosure.

FIG. 5A illustrates a sound generation device according to an embodimentof the present disclosure.

FIG. 5B is a cross-sectional view taken along line II-II′ of FIG. 5A.

FIG. 6 illustrates a fixing device of the sound generation deviceaccording to an embodiment of the present disclosure.

FIG. 7 illustrates a connection structure of a supporting member and asound generation device according to an embodiment of the presentdisclosure.

FIG. 8 illustrates a connection structure of a supporting member and asound generation device according to an embodiment of the presentdisclosure.

FIGS. 9A and 9B illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

FIG. 10 illustrates an example of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

FIGS. 11A to 12B show experimental results obtained by measuring a rearsurface of a display panel, in a display apparatus according to anembodiment of the present disclosure.

FIGS. 13A to 13G illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

FIGS. 14A to 14C illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

FIGS. 15A to 15C illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

FIGS. 16A to 16C illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

FIG. 17 illustrates a vibration characteristic of a sound generationdevice according to an embodiment of the present disclosure.

FIG. 18 illustrates a sound output characteristic of a sound generationdevice according to an embodiment of the present disclosure.

Throughout the drawings and the detailed description, unless otherwisedescribed, the same drawing reference numerals should be understood torefer to the same elements, features, and structures. The relative sizeand depiction of these elements may be exaggerated for clarity,illustration, and convenience.

DETAILED DESCRIPTION

Reference will now be made in detail to embodiments of the presentdisclosure, examples of which may be illustrated in the accompanyingdrawings. In the following description, when a detailed description ofwell-known functions or configurations related to this document isdetermined to unnecessarily cloud a gist of the inventive concept, thedetailed description thereof will be omitted. The progression ofprocessing steps and/or operations described is an example; however, thesequence of steps and/or operations is not limited to that set forthherein and may be changed as is known in the art, with the exception ofsteps and/or operations necessarily occurring in a particular order.Like reference numerals designate like elements throughout. Names of therespective elements used in the following explanations are selected onlyfor convenience of writing the specification and may be thus differentfrom those used in actual products.

It will be understood that, although the terms “first,” “second,” etc.may be used herein to describe various elements, these elements shouldnot be limited by these terms. These terms are only used to distinguishone element from another. For example, a first element could be termed asecond element, and, similarly, a second element could be termed a firstelement, without departing from the scope of the present disclosure.

The term “at least one” should be understood as including any and allcombinations of one or more of the associated listed items. For example,the meaning of “at least one of a first item, a second item, and a thirditem” denotes the combination of all items proposed from two or more ofthe first item, the second item, and the third item as well as the firstitem, the second item, or the third item.

In the description of embodiments, when a structure is described asbeing positioned “on or above” or “under or below” another structure,this description should be construed as including a case in which thestructures contact each other as well as a case in which a thirdstructure is disposed therebetween. The size and thickness of eachelement shown in the drawings are given merely for the convenience ofdescription, and embodiments of the present disclosure are not limitedthereto.

Features of various embodiments of the present disclosure may bepartially or overall coupled to or combined with each other, and may bevariously inter-operated with each other and driven technically as thoseskilled in the art can sufficiently understand. Embodiments of thepresent disclosure may be carried out independently from each other, ormay be carried out together in a co-dependent relationship.

In the present disclosure, the term “display apparatus” is used toencompass a display apparatus, such as a liquid crystal display module(LCM) or an organic light-emitting display module (OLED module), thatincludes a display panel and a driving unit for driving the displaypanel. Further, the term “display apparatus” according to an embodimentof the present disclosure is used to further encompass a set device (ora set apparatus) or a set electronic apparatus, as a finished product,such as a notebook computer or a laptop computer, a television set, acomputer monitor, an equipment apparatus (e.g., display equipment in anautomotive apparatus or another type of vehicle apparatus) or a mobileelectronic apparatus that is a complete product or a final product (forexample a smart phone or electronic pad. etc.) that includes the LCM,the OLED module, or the like. Accordingly, in the present disclosure,the term “display apparatus” is used both as a display apparatus itself,such as the LCM and the OLED modules, and also as a set apparatus thatis a final consumer apparatus or an application product including theLCM or the OLED module.

In addition, in some examples, the LCM and the OLED module, including adisplay panel and a driving unit thereof, may be referred to as a“display apparatus” in a particular sense, and the electronic apparatusas a the final product including the LCM and OLED module may bealternatively referred to as a “set apparatus” or a “set device.” Forexample, the display apparatus in a particular sense may include adisplay panel, such as a liquid crystal display (LCD) panel or anorganic light-emitting display (OLED) panel, and a source printedcircuit board (PCB) as a controller for driving the same. The setapparatus may further include a set PCB that is a controller set to beelectrically connected to the source PCB and to control the overalloperations of the set device or the set apparatus.

The display panel used for an embodiment of the present disclosure maybe any type of display panel, for example, a liquid crystal displaypanel, an organic light-emitting diode display panel, anelectroluminescent display panel, etc., but embodiments are not limitedto these types. For example, the display panel may be any panel capableof generating sound in accordance with a vibration by a sound generationdevice. Moreover, a shape or size of a display panel applied to adisplay apparatus according to an embodiment is not limited.

An example liquid crystal display panel may include a plurality of gatelines, a plurality of data lines, and a plurality of pixels respectivelyprovided in a plurality of pixel areas defined by intersections of thegate lines and the data lines. Further, the liquid crystal display panelmay include an array substrate including a thin film transistor (TFT)corresponding to a switching device for controlling a lighttransmittance of each of the plurality of pixels, an upper substrateincluding a color filter and/or black matrix, and a liquid crystal layerformed between the array substrate and the upper substrate.

An example organic light-emitting display panel may include a pluralityof gate lines, a plurality of data lines, and a plurality of pixelsrespectively provided in a plurality of intersections of the gate linesand the data lines. In addition, the organic light-emitting displaypanel may include an array substrate including a thin film transistor(TFT) corresponding to an element for selectively applying a voltage toeach pixel, an organic light-emitting device layer on the arraysubstrate, and an encapsulation substrate disposed on the arraysubstrate to cover the organic light-emitting device layer. Theencapsulation substrate may protect the TFT and the organiclight-emitting device layer from an external impact, and may reduce orprevent moisture or oxygen from penetrating into the organiclight-emitting device layer. Furthermore, the organic light-emittingdevice layer provided on the array substrate may include an inorganiclight-emitting layer, for example, nano-sized material layer or quantumdot material layer. As another example, the display panel may include amicro light-emitting diode.

The display panel may further include a backing, such as a metal plate,attached to a rear surface of the display panel. However, embodimentsare not limited to the metal plate, and other structures may beprovided.

The display panel including the sound generation device according to anembodiment of the present disclosure may be implemented at a userinterface module in a vehicle, such as the central control panel area inan automobile. For example, such a display panel may be configuredbetween two front seat occupants such that sounds due to vibrations ofthe display panel propagate towards the interior of the vehicle. Assuch, the audio experience within a vehicle can be improved as comparedto having speakers only at the interior sides or edges of the vehicle.

Hereinafter, a display apparatus according to embodiments of the presentdisclosure will be described in detail with reference to theaccompanying drawings.

FIG. 1A illustrates a display apparatus including a sound generationdevice according to an embodiment of the present disclosure.

FIG. 1A illustrates a rear surface of a display apparatus 10. Withreference to FIG. 1A, the display apparatus 10 may include a displaypanel 100 for displaying an image, and a sound generation device 200.The sound generation device 200 may vibrate the display panel 100 togenerate sound. The sound generation device 200 may be on the rearsurface of the display panel 100.

The display panel 100 may display an image, e.g., an electronic ordigital image, and may be implemented as all types of display panels,such as a liquid crystal display panel, an organic light emitting diode(OLED) display panel, an electroluminescent display panel, etc. Thedisplay panel 100 may vibrate, based on a vibration of the soundgeneration device 200, to output a sound.

According to an embodiment, the display panel 100 may display an imagein a type such as a top-emission type, a bottom-emission type, or adual-emission type, based on a structure of a pixel array layer,including an anode electrode, a cathode electrode, and an organiccompound layer. In the top-emission type, visible light emitted from thepixel array layer may be irradiated onto a region in front of a basesubstrate to allow an image to be displayed. In the bottom-emissiontype, the visible light emitted from the pixel array layer may beirradiated onto a region behind the base substrate to allow an image tobe displayed.

And, the sound generation device 200 may generate a sound by using thedisplay panel 100 as a vibration plate. The sound generation device 200may be referred to as an “actuator”, an “exciter,” or a “transducer”,but embodiments are not limited thereto. For example, the soundgeneration device 200 may be a sound device for outputting a soundaccording an electrical signal.

FIG. 1B is a cross-sectional view taken along line I-I′ of FIG. 1A.

With reference to FIG. 1B, the display apparatus may include the soundgeneration device 200 and a supporting member 300. The supporting member300 may support at least one of rear surface and a side (or lateral)surface of the display panel 100. The sound generation device 200 may befixed to the supporting member 300.

As an example, the supporting member 300 may be a cover bottom. Forexample, the supporting member 300 may include a middle cabinet providedto surround a lateral surface or a side surface of the display panel100, connected with the cover bottom, and provided to accommodate oneperiphery of the display panel 100 to support the display panel 100. Forexample, the middle cabinet may have a “┤”-shaped (e.g., a rotated“T”-shape) cross section. The supporting member 300 may include thecover bottom, or may include the cover bottom and the middle cabinet,but embodiments are not limited to these example structures. Thesupporting member 300 may include any structure capable of supportingthe rear surface or lateral surface of the display panel 100.

The supporting member 300 may be a plate-shaped member formed over arear surface or entire surface of the display panel 100. For example,the supporting member 300 may cover the whole rear surface of thedisplay panel 100 to be spaced apart from the rear surface. Thesupporting member 300 may have a plate shape formed of, e.g., a glassmaterial, a metal material, or a plastic material. For example, aperiphery or a sharp corner of the supporting member 300 may have atetragonal (e.g., rectangular or square) shape or a curved shape, e.g.,through a chamfer process or a corner rounding process. According to anembodiment, the supporting member 300 including a glass material mayinclude sapphire glass. For example, the supporting member 300 includingthe metal material may be formed of one or more of: aluminum (Al), an Alalloy, a magnesium (Mg) alloy, and an iron (Fe)-nickel (Ni) alloy. Asanother example, the supporting member 300 may have a stacked structureincluding a glass plate, which may have a thickness relatively thinnerthan a metal plate and a glass plate, and may face the rear surface ofthe display panel 100. In one example, a rear surface of the displayapparatus may be used as a mirror surface, e.g., due to the metal plate.However, embodiments are not limited to these example materials andshapes.

And, the supporting member 300 may include a through hole into which thesound generation device 200 may be inserted. For example, the throughhole may be bored in a particular partial region of the supportingmember 300 along a thickness direction of the supporting member 300 tohave, e.g., a circular shape or a polygonal shape, such that the soundgeneration device 200 may be inserted in the through hole.

The supporting member 300 may be referred to as a “cover bottom,” a“plate bottom,” a “back cover,” a “base frame,” a “metal frame,” a“metal chassis,” a “chassis base,” or an “m-chassis.” Thus, thesupporting member 300 may be embodied in all types of frame orplate-shaped structure that may be used as a supporter for supportingthe display panel 100, and may be disposed at the rear surface of thedisplay apparatus.

In addition, an adhesive member 400 may be disposed in the periphery ofthe supporting member 300 and the display panel 100. The adhesive member400 may be provided to adhere the display panel 100 and the supportingmember 300 to each other, and the adhesive member 400 may include adouble-sided tape, a single-sided tape, an adhesive, a bond, and/or thelike, but embodiments are not limited thereto.

FIGS. 2A and 2B are cross-sectional views illustrating the soundgeneration device according to an embodiment of the present disclosure.

The sound generation device may be classified as a first structurecorresponding to an external magnetic type in which a magnet is disposedoutside a coil, and a second structure corresponding to an internalmagnetic type in which a magnet is disposed inside a coil. The firststructure may be expressed as a “dynamic type” or “external magnetictype,” and the second structure may be expressed as a “micro type” or“internal magnetic type.” FIG. 2A illustrates the first structure, andFIG. 2B illustrates the second structure.

FIG. 2A illustrates the first structure in which a magnet is disposedoutside a coil. With reference to FIG. 2A, the sound generation device200 may include a plurality of plates 210 and 210′, a magnet 220 on theplate 210, a center pole 230 on the plate 210, a bobbin 250 near thecenter pole 230, and a coil 260 wound on an outer surface of the bobbin250. For example, the magnet 220 may be on the first plate 210, and thesecond plate 210′ may be on the magnet 220. The first plate 210 and thesecond plate 210′ may support the magnet 220, and may fix the soundgeneration device 200 to the supporting member 300. Accordingly, thefirst plate 210 may be fixed to a supporting hole of the supportingmember 300, and the magnet 220 may be fixed and supported between thefirst plate 210 and the second plate 210′.

At least one of the first plate 210 and the second plate 210′ may beformed of a magnetic material, such as iron (Fe). The first plate 210and the second plate 210′ are not limited to the term “plate.” Forexample, they may be referred to another term, such as a “yoke.”

The magnet 220 may be implemented, e.g., with a sintered magnet, with amaterial such as barium ferrite, and a material of the magnet 220 mayinclude one or more of: ferric oxide (Fe₂O₃); barium carbonate (orwitherite) (BaCO₃); neodymium (Nd); strontium ferrite (Fe₁₂O₁₉Sr), e.g.,with an improved magnet component; and an alloy cast magnet includingaluminum (Al), nickel (Ni), cobalt (Co), and/or the like. As anotherexample, the neodymium magnet may be neodymium-iron-boron (Nd—Fe—B).However, embodiments are not limited to these examples.

A frame 240 may be on the second plate 210′ along the periphery of thefirst plate 210. The center pole 230 may be in a center region of thefirst plate 210. The center pole 230 and the first plate 210 may beformed as one body. The center pole 230 may be referred to as “polepieces.” In one example, pole pieces may be additionally disposed on thecenter pole 230.

The bobbin 250 may surround the center pole 230. The coil 260 may bewound on a lower outer area, for example, a lower outer surface of thebobbin 250, and a current or a voice signal for generating sound may beapplied to the coil 260. The bobbin 250 may be a ring-shaped structure,e.g., of paper, and aluminum (Al) sheet, and/or the like. The coil 260may be wound around a certain area of the lower portion of the bobbin250. The bobbin 250 and the coil 260 may be referred to as a “voicecoil.” A damper 270 may be disposed between some area of an upperportion of the bobbin 250 and the frame 240. The damper 270 may beexpressed by another term, such as an “edge.”

FIG. 2B illustrates the second structure in which a magnet is disposedinside a coil. With reference to FIG. 2B, the sound generation device200′ of the second structure may include a magnet 220 on a first plate210, a center pole 230 on the magnet 220, a bobbin 250 disposed aroundthe magnet 220 and the center pole 230, and a coil 260 wound on an outersurface of the bobbin 250.

For example, the first plate 210 may be fixed to a supporting hole ofthe supporting member 300. The magnet 220 may be on the first plate 210,and the center pole 230 may be on the magnet 220. The center pole 230may be referred to as “pole pieces.” In one example, pole pieces may beadditionally provided on the center pole 230. The bobbin 250 maysurround the magnet 220 and the center pole 230, and the coil 260 may bewound on the outer surface of the bobbin 250.

A second plate 210′ may be on the outer periphery of the first plate210, and a frame 240 may be outside the periphery of the second plate210′. For example, a damper 270 may be disposed between the frame 240and the bobbin 250.

In comparison to the first structure in which the magnet is disposedoutside the coil, the second structure having the internal magnet hasadvantages of small leakage magnetic flux and decreased total size ofthe sound generation device. The sound generation device used for thedisplay apparatus according to an embodiment of the present disclosureis not limited to the structures of the FIGS. 2A and 2B. It is possibleto use any sound generation device capable of generating the sound byvibrating, e.g., directly vibrating, the display panel.

FIGS. 3A and 3B illustrate a sound-generating method of the soundgeneration device with a first structure according to an embodiment ofthe present disclosure.

FIG. 3A shows a state in which a current is applied. The center pole 230connected to a lower surface of the magnet 220 may become a north (N)pole, and the second plate 210′ connected to an upper surface of themagnet 220 may become a south (S) pole. Thus, an external magnetic fieldmay be generated around the coil 260.

In this state, if the current for generating sound is applied to thecoil 260, an applied magnetic field is formed around the coil 260,whereby a force for upwardly moving the bobbin 250 may be generated bythe applied magnetic field and the external magnetic field. For example,when the current is applied to the coil 260, the magnetic field may begenerated around the coil 260, and the external magnetic field may begenerated by the magnet 220, whereby the entire bobbin 250 may be guidedand moved upwardly by the center pole 230 based on Fleming's Left-HandRule for Motors.

Accordingly, as one surface of the bobbin 250 may contact a rear surfaceof the display panel 100, the bobbin may vibrate the display panel 100in an upward direction (illustrated as an arrow) according to whether ornot the current is applied to the coil 260, and sound wave (or sound) isgenerated by the vibration of the display panel 100. In this state, whenthe current stops or a reverse current is applied, as shown in FIG. 3B,a force for downwardly moving the bobbin 250 may be generated, similarto the principle described with reference to FIG. 3A, and the displaypanel 100 may vibrate in a downward direction (illustrated as an arrow).

The damper 270 may be disposed between the frame 240 and some portion ofthe upper portion of the bobbin 250. The damper 270 may have a wrinkledstructure, e.g., having elasticity, and the damper 270 may control (ordampen) the up-and-down vibration of the bobbin 250 by contraction andrelaxation movements in accordance with the up-and-down movement of thebobbin 250. That is, the damper 270 may be connected to the bobbin 250and the frame 240, and the up-and-down vibration of the bobbin 250 maybe controlled by a restoring force of the damper 270. For example, ifthe bobbin 250 vibrates to be higher or lower than a particular height,the bobbin 250 may be restored to its original position by the restoringforce of the damper 270. Therefore, the display panel 100 may verticallyvibrate based on an application direction and level of a current appliedto the coil 260, and a sound wave may be generated by the vibration.

FIGS. 4A and 4B illustrate a sound-generating method of the soundgeneration device with a second structure according to an embodiment ofthe present disclosure.

FIG. 4A shows a state in which a current is applied. The second plate210′ becomes the S pole, and the center pole 230 connected with an uppersurface of the magnet 220 becomes the N pole, whereby an externalmagnetic field may be generated around the coil 260. The S-pole and theN-pole may be interchanged; if so, the sound generation device mayidentically operate by changing a winding direction of the coil 260. Inthis state, when the current for generating sound is applied to the coil260, an applied magnetic field may be formed around the coil 260,whereby a force for upwardly moving the bobbin 250 may be generated bythe applied magnetic field and the external magnetic field. For example,when the current is applied to the coil 260, the magnetic field may begenerated around the coil 260, and the external magnetic field may begenerated by the magnet 220, whereby the entire bobbin 250 may be guidedand moved upwardly by the center pole 230 based on Fleming's Left-HandRule for Motors.

Accordingly, as one surface of the bobbin 250 is in contact with therear surface of the display panel 100, thus, the bobbin 250 may vibratethe display panel 100 in an upward direction (illustrated as an arrow)according to whether or not the current is applied to the coil 260, andsound wave (or sound) may be generated by the vibration of the displaypanel 100. In this state, when the current stops or a reverse current isapplied, as shown in FIG. 4B, a force for downwardly moving the bobbin250 may be generated according to principles similar to the abovedescription with reference FIG. 4A, whereby the display panel 100 may bevibrated in a downward direction (illustrated as an arrow).

The damper 270 may be disposed between the frame 240 and some portion ofthe upper portion of the bobbin 250. The damper 270 may have a wrinkledstructure having elasticity, whereby the damper 270 may control theup-and-down vibration of the bobbin 250 by contraction and relaxationmovements in accordance with the up-and-down movement of the bobbin 250.That is, the damper 270 may be connected with the bobbin 250 and theframe 240, and the up-and-down vibration of the bobbin 250 may becontrolled (or dampened) by a restoring force of the damper 270. Forexample, if the bobbin 250 vibrates to be higher or lower than aparticular height, the bobbin 250 may be restored to its originalposition by the restoring force of the damper 270. Accordingly, thedisplay panel 100 may be vibrated in the up-and-down direction inaccordance with the direction and level of the current applied to thecoil 260, to thereby generate a sound wave by the vibration.

FIG. 5A illustrates a sound generation device according to an embodimentof the present disclosure. FIG. 5B is a cross-sectional view taken alongline II-II′ of FIG. 5A.

With reference to FIG. 5A, a display apparatus may include a displaypanel 100, and first and second sound generation devices 1200 and 1200′for generating sound by vibrating the display panel 100. The first soundgeneration device 1200 and the second sound generation device 1200′ maybe adjacent to each other. If the plurality of sound generation devicesare spaced apart from each other, it may be difficult to maintain acontact characteristic between the sound generation device and thedisplay panel, which may cause deterioration of sound quality byinterference or delay phenomenon of the sound wave generated in thesound generation devices. Thus, in comparison to a structure in whichthe plurality of sound generation devices are spaced apart from eachother, a structure according to an embodiment in which the soundgeneration devices are adjacent to each other may reduce an interferenceor delay phenomenon of the sound wave generated in the sound generationdevices, to thereby improve the sound output characteristics.

The first structure or the second structure described above withreference to FIGS. 2A and 2B may be applied to a structure of each ofthe first sound generation device 1200 and the second sound generationdevice 1200′. For example, the display apparatus may include a fixingdevice 1000 for fixing the first sound generation device 1200 and thesecond sound generation device 1200′. The fixing device 1000 may be amold structure manufactured by a molding process, e.g., using a plasticmaterial, but embodiments are not limited thereto. The fixing device1000 will be described below with reference to FIG. 6.

With reference to FIG. 5B, the display apparatus may include the firstsound generation device 1200, the second sound generation device 1200′,and a supporting member 300. The supporting member 300 may support atleast one of rear and side surfaces of the display panel 100. Thesupporting member 300 may be a plate-shaped member, e.g., of a metal orplastic material, over a rear surface or an entire surface of thedisplay panel 100.

The sound generation device 1200 and 1200′ may be accommodated in asupporting hole 310 of the supporting member 300. If the soundgeneration device 1200 and 1200′ is inserted into and fixed to thesupporting hole 310, it is possible to decrease or reduce a height ofthe sound generation device 1200 and 1200′ disposed between the rearsurface of the display panel 100 and an inner surface of the supportingmember 300, to thereby realize a relatively small space or area forgenerating the sound.

For example, the display apparatus may include a nut 330 fixed to thesupporting member 300. The fixing device 1000 may be fixed to the nut330 by the use of screw 320 inserted into a mounting hole of the fixingdevice 1000. For example, a screw through-hole may be provided in aninner surface of the nut 330. Thus, after a mounting hole of the fixingdevice 1000 is aligned with the screw through-hole of the nut 330, thefixing device 1000 may be fixed to the supporting member 300 byfastening (or tightening) the screw 320.

In one example, the nut 330 may be a self-clinching nut. An example ofthe self-clinching nut may be a PEM® nut, although embodiments are notlimited thereto. If the self-clinching nut is used, some of thevibration generated in the sound generation device 1200 may be absorbedby the self-clinching nut. Thus, a vibration transferred to thesupporting member 300 may be reduced.

In the display apparatus according to an embodiment of the presentdisclosure, the supporting member 300 and the sound generation device1200 may be fixed to each other by the use of nut and screw included inthe supporting member 300. Thus, a thickness of the display panel 100can be reduced. Further, an adhesive member 400 may be disposed in aperiphery of the supporting member 300 and the display panel 100, tothereby include a double-sided tape, a single-sided tape, an adhesive, abond, and/or the like, but embodiments are not limited thereto.

FIG. 6 illustrates a fixing device of the sound generation deviceaccording to an embodiment of the present disclosure.

With reference to FIG. 6, the fixing device 1000 of the sound generationdevice may be an integrated fixing device for supporting and fixing thefirst sound generation device 1200 and the second sound generationdevice 1200′ to be adjacent to each other. Thus, the first soundgeneration device 1200 and the second sound generation device 1200′fixed using the fixing device 1000 may be a pair of sound generationdevices, which will be referred to as a “pair of sound generationdevices.” The fixing device 1000 of the sound generation device mayinclude a supporting part for supporting the sound generation devices1200 and 1200′, a plurality of rib parts disposed near the soundgeneration devices 1200 and 1200′, and a plurality of mounting holes forfixing the fixing device 1000 to the supporting member 300.

For example, the supporting part may include a first supporting part1120 for supporting the first sound generation device 1200, and a secondsupporting part 1220 for supporting the second sound generation device1200′. The first supporting part 1120 may support a portion of a lateralsurface and a rear surface of the first sound generation device 1200.The first supporting part 1120 may have a cylinder shape, butembodiments are not limited thereto. The second supporting part 1220 maysupport a portion of a lateral surface and a rear surface of the secondsound generation device 1200′. The second supporting part 1220 may havea cylinder shape.

For example, the first supporting part 1120 and the second supportingpart 1220 may further include protrusions having two or four arc-shapedprotrusions. One surface of each of the protrusions may be bent towardan inner portion of each of the sound generation devices 1200 and 1200′,and may support a portion of a rear surface of each sound generationdevice 1200 and 1200′, thereby avoiding or preventing the soundgeneration device 1200 and 1200′ from being separated from the outsideof the fixing device 1000. For example, a plurality of rib parts may benear the first supporting part 1120 and the second supporting part 1220,thereby maintaining a rigidity of the fixing device 1000, and reducingor preventing a deformation of the fixing device 1000 of the soundgeneration device, even when being used for a long time.

The plurality of rib parts may include a first rib part 1410 extendingin a widthwise (or horizontal) direction from an outer portion of thefirst supporting part 1120 and the second supporting part 1220 in ahorizontal direction, a second rib part 1420 for connecting the firstsupporting part 1120 and the second supporting part 1220 with each otherin the widthwise (or horizontal) direction, and a third rib part 1430connected with the first rib part 1410 in a lengthwise (or vertical)direction. As used herein, the terms “widthwise direction” or“horizontal direction” refer to a direction of a long side along which apair of sound generation devices is disposed, and may be usedinterchangeably. As used herein, the terms “lengthwise direction” or“vertical direction” refer to a direction perpendicular to the widthwise(or horizontal) direction, and may be used interchangeably. In addition,the widthwise (or horizontal) direction may be referred to as a“landscape” direction of the display panel, and the lengthwise (orvertical) direction may be referred to as a “portrait” direction of thedisplay panel.

The first rib part 1410 may extend from the outer surface of the firstsupporting part 1120 and the second supporting part 1220 in thehorizontal direction, to thereby form a horizontal-direction outerstructure of the fixing device 1000 of the sound generation device. Acentral area of the first rib part 1410, that is, the central areabetween the first supporting part 1120 and the second supporting part1220, may be relatively higher or thicker than both side areas of thefirst rib part 1410. Accordingly, even when two sound generation devicesare vibrated for a long time, the fixing device 1000 of the two soundgeneration devices may not be deformed, and a change in the relativeposition between the two sound generation devices and the display panelmay be reduced.

One or more second rib parts 1420 may be disposed where the firstsupporting part 1120 and the second supporting part 1220 are connectedto each other as one body. The one or more second rib parts 1420 may bedisposed inside the first rib part 1410. In the FIG. 6 example, two ofthe second rib parts 1420 are illustrated, but embodiments are notlimited thereto. For example, one, three, or more of the second rib part1420 may be provided.

One or more third rib parts 1430 may be connected to the first andsecond rib parts 1410 and 1420 as one body. The one or more third ribparts 1430 may extend in the widthwise direction, and may be providedbetween two second rib parts 1420 or between two first rib parts 1410.

In the FIG. 6 example, one third rib part 1430 is illustrated, and thethird rib part 1430 extends in the lengthwise direction between two ofthe first rib parts 1410, but embodiments are not limited thereto. Forexample, the third rib part 1430 may extend in a shorter distancebetween two of the second rib parts 1420.

The rib parts may further include a fourth rib part 1440 between thefirst supporting part 1120 and the first rib part 1410, or between thesecond supporting part 1220 and the first rib part 1410. The fourth ribpart 1440 may be obliquely extended. The fourth rib part 1440 may avoidor prevent the fixing device 1000 of the sound generation device frombeing bent, e.g., during a long-time driving of the sound generationdevice.

Accordingly, the display apparatus according to an embodiment mayinclude the fixing device for fixing the pair of sound generationdevices and the plurality of rib parts near the sound generationdevices. Therefore, the rigidity of the sound generation devices may bemaintained, and a sound characteristic change caused by a long-timeoperation may be reduced.

A distance between the first supporting part 1120 and the secondsupporting part 1220 may be larger than a minimum threshold value thatenables formation of the rib part, and may be smaller than a maximumthreshold value corresponding to a diameter of the first soundgeneration device 1200 and the second sound generation device 1200′. Ifthe distance between the first supporting part 1120 and the secondsupporting part 1220 is greater than the minimum threshold value, thesound quality may be reduced. Therefore, the distance between the firstsupporting part 1120 and the second supporting part 1220 may be smallerthan the diameter of the first sound generation device 1200 and/or thesecond sound generation device 1200′, to thereby reduce or preventdeterioration of the sound quality. For example, if the sound generationdevice has size (e.g., diameter) ‘D’, the distance between the firstsupporting part 1120 and the second supporting part 1220 may be a valuelarger than about 7 mm, corresponding to an example minimum thresholdvalue, and may be smaller than the size ‘D’ of the sound generationdevice. In one example, the change in sound quality characteristics isnot greater when the size ‘D’ of the sound generation device is about 28mm, then if the distance is about (0.85*D) (e.g., about 23.6 mm).

A plurality of mounting holes 1310, 1320, 1330, and 1340 may be includedfor fixing the fixing device 1000 and the supporting member 300 to eachother. The screw through-hole may be formed in the inner surface of thenut 330, as shown in the example of FIG. 5B. Thus, after aligning themounting holes 1310, 1320, 1330, and 1340 of the fixing device 1000 andthe screw through-hole of the nut 330, the screw 320 may be fastened (ortightened) so that the fixing device 1000 may be fixed to the supportingmember 300.

If, according to an embodiment of the present disclosure, a pair ofsound generation devices is applied, a uniform sound pressure may begenerated in the entire frequency range, e.g., a whole frequency band,thereby realizing good sound output characteristics.

FIG. 7 illustrates a connection structure of a supporting member and asound generation device according to an embodiment of the presentdisclosure.

An embodiment of the present disclosure may be applied to both first andsecond structures of the sound generation device. Hereinafter, anexample of the second structure of the sound generation device will bedescribed in detail.

With reference to FIG. 7, the sound generation device 200 may include adiameter enlargement part 614. The diameter enlargement part 614 may beformed as one body with the first plate 210 of the sound generationdevice 200. The first plate 210 of the sound generation device 200 maynot have a cylindrical shape. Herein, one portion of the first plate 210may have a protrusion portion larger than a diameter of the otherportion of the first plate 210. The protrusion portion having anenlarged diameter may be referred to as the diameter enlargement part614. The diameter enlargement part 614 may have a ring shape. Anextension portion 612 for fixation of the sound generation device 200may be formed in a portion of the diameter enlargement part 614.

In the extension portion 612, there may be a screw 320 and a nut 330. Bythe use of nut 330 fixed to the supporting member 300, the soundgeneration device 200 may be connected with the supporting member 300 bythe screw 320. For example, the nut 330 may be a self-clinching nut. Oneexample of the self-clinching nut is a PEM® nut, but embodiments are notlimited thereto. If using the self-clinching nut, some of the vibrationgenerated in the sound generation device 200 may be absorbed by theself-clinching nut. Thus, a vibration transferred to the supportingmember 300 may be reduced. Also, the sound generation device 200 may beaccommodated into a supporting hole 310 included in the supportingmember 300.

The display panel 100 may be attached to the bobbin 250 of the soundgeneration device 200 by the use of adhesive member 402. The adhesivemember 402 may be a double-sided tape, single-sided tape, adhesive, orbond, but embodiments are not limited to these examples. As shown in theFIG. 7 example, the adhesive member 402 may be provided on a particularportion where the sound generation device 200 is adhered to the displaypanel 100, but embodiments are not limited to this structure. Theadhesive member 402 may be provided on an entire rear surface of thedisplay panel 100. For example, the adhesive member 402 may be providedon an entire surface between the display panel 100 and the soundgeneration device 200.

FIG. 8 illustrates a connection structure of a supporting member and asound generation device according to an embodiment of the presentdisclosure.

An embodiment of the present disclosure may be applied to both first andsecond structures of the sound generation device. Hereinafter, anexample of the second structure of the sound generation device will bedescribed in detail.

With reference to FIG. 8, the sound generation device 200 may include amagnet 620 on a first plate 610, a center pole 630 on the magnet 620, abobbin 650 disposed around the magnet 620 and the center pole 630, and acoil 660 wound on an outer surface of the bobbin 650. For example, asecond plate 610′ may be on the periphery of the first plate 610, and aframe 640 may be on the periphery of the second plate 610′. Also, adamper 670 may be disposed between the frame 640 and the bobbin 650. TheFIG. 8 example of the sound generation device 200 is substantiallysimilar to that of the FIG. 2 example, and a duplicate description forthe sound generation device 200 will be omitted.

The sound generation device 200 may further include a diameterenlargement part 614. The diameter enlargement part 614 may be formed asone body with the first plate 610 of the sound generation device 200.The first plate 610 of the sound generation device 200 may be a cylindershape. Herein, one portion of the first plate 610 may have a protrusionportion larger than a diameter of the remaining area of the first plate610. The protrusion portion with a relatively-large diameter may bereferred to as the diameter enlargement part 614. The diameterenlargement part 614 may have a ring shape, and an extension portion 612for fixation of the sound generation device 200 may be formed in aparticular portion of the diameter enlargement part 614.

In the extension portion 612, there may be a screw 320 and a nut 330.For example, the nut 330 may be a self-clinching nut. One example of theself-clinching nut is a PEM® nut, but embodiments are not limitedthereto. The sound generation device 200 may be fixed to a supportingmember 300 by the use of nut 330 and screw 320. If using theself-clinching nut to connect the supporting member 300 and the soundgeneration device 200 with each other, some of the vibration generatedin the sound generation device 200 may be absorbed in the self-clinchingnut, to reduce the vibration transferred to the supporting member 300.If the supporting member 300 and the sound generation device 200 aredirectly connected to each other without using the self-clinching nut,the vibration generated for an operation of the sound generation device200 may be transferred to the supporting member 300 for a long period oftime. In this case, if the supporting member 300 has a small thickness,the supporting member 300 might be bent or deformed. For example, if thesupporting member 300 is thin, the sound generation device 200 may bedirectly coupled or connected to the screw 320 of the supporting member300. Thus, a fixing force between the supporting member 300 and thesound generation device 200 may be insufficient.

Accordingly, if the nut 330 is provided to fix the sound generationdevice 200 to the supporting member 300, it may be necessary to increasea thickness of the supporting member 300 to avoid or prevent thesupporting member 300 from being bent or deformed and to improve afixing strength between the supporting member 300 and the soundgeneration device 200. The increased thickness of the supporting member300 may cause an increase in the overall thickness of the displayapparatus. If the supporting member 300 is formed of glass or stainlesssteel for improving an aesthetic design appearance of the displayapparatus, it may be impossible to insert the nut 330 into thesupporting member 300.

Therefore, a second supporting member 305 may be further provided on thesupporting member 300 to insert the nut 330 into the supporting member300. The second supporting member 305 may be disposed closer to thedisplay panel 100 than the supporting member 300.

The second supporting member 305 may be formed of, e.g., a metalmaterial, and the nut 330 may be capable of being inserted into thesecond supporting member 305. By the use of the nut 330 fixed to thesupporting member 300, the sound generation device 200 may be connectedto the supporting member 300 and the second supporting member 305 by thescrew 320. The supporting member 300 and the second supporting member305 may be fixed and adhered to each other by the use of an adhesivemember. The adhesive member may be a double-sided tape, single-sidedtape, adhesive, or bond, but embodiments are not limited thereto. In oneexample, the second supporting member 305 may be formed of a metalmaterial, for example, aluminum (Al), but embodiments are not limitedthereto. The second supporting member 305 may be referred to as an“inner plate.”

The supporting member 300 may be glass, stainless steel, and/or thelike. Thus, an aesthetic design appearance of a display apparatus may beimproved. Accordingly, as the second supporting member 305 may beadditionally provided, the sound generation device 200 may be tightlyadhered to a front surface of the display panel 100 by the thickness ofthe supporting member 300. Thus, the thickness of the display apparatusmay be decreased. Accordingly, the additionally-provided secondsupporting member 305 may enable a decrease in the thickness of thesound generation device 200, thereby decreasing the thickness of theoverall display apparatus. For example, the thickness of the soundgeneration device may be decreased by the second supporting member 305,thereby overcoming a problem related to the increased thickness orheight of a supporting plate for covering the sound generation device200. Thus, the sound generation device 200 and signal lines may bedisposed under the supporting plate, thereby providing the displayapparatus with the good exterior design.

An adhesive member 602 may attach the display panel 100 to the soundgeneration device 200. The adhesive member 602 may be a double-sidedtape, single-sided tape, adhesive, bond, and/or the like, butembodiments are not limited thereto. As shown in the FIG. 8 example, theadhesive member 602 may be provided in a particular area where the soundgeneration device 200 is attached to the display panel 100, butembodiments are not limited to this example structure. The adhesivemember 602 may be provided on an entire (or whole) rear surface of thedisplay panel 100. For example, the adhesive member 602 may be providedon an entire (or whole) surface between the display panel 100 and thesound generation device 200.

FIGS. 9A and 9B illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

With reference to FIGS. 9A and 9B, a display panel 100 may include afirst region L, a second region R, and a third region C. The firstregion L may be a left region of a rear surface of the display panel100, the second region R may be a right region of the rear surface ofthe display panel 100, and the third region C may be a center region ofthe rear surface of the display panel 100. One of ordinary skill in theart would understand that the terms “left” and “right” areinterchangeable throughout this disclosure, and are used only forconvenience of description with reference to the illustrated drawings. Afirst sound generation device 1800 may be in the first region L of therear surface of the display panel 100, and a second sound generationdevice 1800′ may be in the second region R of the rear surface of thedisplay panel 100.

In one example, the first sound generation device 1800 and the secondsound generation device 1800′ may be provided as a pair of soundgeneration devices. Descriptions of the pair of sound generation deviceare substantially similar to descriptions given above with reference toFIGS. 5A, 5B, and 6, and thus, are not repeated.

A partition may be provided between the first sound generation device1800 and the second sound generation device 1800′. The partition may beconfigured with a first partition 1700, a second partition 1700′, and athird partition 1700″. Each of the first partition 1700, the secondpartition 1700′, and the third partition 1700″ may be an air gap or aspace where a sound may be generated when the display panel 100 isvibrated by the first sound generation device 1800 and the second soundgeneration device 1800′. Further, the second partition 1700′ and thethird partition 1700″ may separate a left sound and a right sound, whichmay be generated by the first sound generation device 1800 and thesecond sound generation device 1800′.

A sound wave, generated when a display panel vibrates by a soundgeneration device, may be progressed radially from a center of the soundgeneration device and may travel. The sound wave may be referred to as a“progressive wave.” The progressive wave may be reflected by one side ofthe partition to generate a reflected wave, and the reflected wave maytravel in an opposite direction of the progressive wave. The reflectedwave may overlap and interfere with the progressive wave and may nottravel, thereby generating a standing wave that stands at a certainposition. A sound pressure may be reduced by the standing wave; thus, asound output characteristic may be reduced. Therefore, a bent portionmay be provided in the partition to decrease the phenomenon of reductionin sound pressure caused by the standing wave generated by interferencebetween the reflected wave and the progressive wave. Also, the standingwave, which causes the sound pressure to be reduced, may be generatedmore at a position at which a level of the progressive wave and thereflected wave is large. Accordingly, the bent portion may be disposedat a position at which a level of a sound wave transferred from thesound generation device is largest. This will be described in detailbelow.

With reference to FIGS. 9A and 9B, the partition may be provided, and abent portion may be further provided on at least one side of thepartition. The first sound generation device 1800 may be in the firstregion L, which may be the left region of the rear surface of thedisplay panel 100. The second sound generation device 1800′ may bedisposed in the second region R, which may be the right region of therear surface of the display panel 100. In addition, the second partition1700′ and the third partition 1700″ may be disposed between the firstsound generation device 1800 and the second sound generation device1800′.

The first partition 1700 may be between the display panel 100 and asupporting member 300. For example, the first partition 1700 may be in aperiphery of the supporting member 300. Also, the first partition 1700,the second partition 1700′, and the third partition 1700″ may be on therear surface of the display panel 100 or on a front surface of thesupporting member 300. Further, the first partition 1700 may be in theperiphery of the display panel 100. For example, the first partition1700 may be in a periphery of the rear surface of the display panel 100.With reference to FIGS. 9A and 9B, an example in which the firstpartition 1700 is on the supporting member 300 will be described.

A bent portion 712 may be provided on one or more sides of the firstpartition 1700. The bent portion 712 may be provided on one or moresides, e.g., where a strongest sound wave reaches, among four sides ofthe first partition 1700. The bent portion 712 may be configured to facetoward the first and second sound generation devices 1800 and 1800′. Forexample, the bent portion 712 may be configured to face the first andsecond sound generation devices 1800 and 1800′. The rear surface of thedisplay panel 100 may include four sides, and the bent portion 712 maybe provided on one or more first sides of the four sides.

Therefore, each of two sides, e.g., an upper side and a lower side,among four sides surrounding the display panel 100, may configure a bentportion 712 to have a certain inclined angle with respect to ahorizontal direction (or a widthwise direction) of the display panel100. The bent portion 712 may be configured with two straight-lineportions and may be provided at a position at which the twostraight-line portions contact each other. Accordingly, the degree ofreduction in a sound pressure caused by a standing wave may be reduced.

With reference to FIG. 9B, the bent portion 712 and a protrusion portionor pad part 713 may be provided in the first partition 1700. Forexample, the bent portion 712 may be provided on one or more sides ofthe first partition 1700, and one or more pad parts 713 may be providedon a side perpendicular to a side on which the bent portion 712 isprovided. The pad part 713 may trap a reflected wave, thereby decreasingthe degree of reduction in a sound pressure caused by the standing wave.

A substrate configuring the display panel 100 may use, e.g., a glasssubstrate. To implement a thin display apparatus, the glass substratemay be provided to be thin. For example, by using a glass substratehaving a thickness of about 0.7 mm to 0.5 mm, the display apparatus maybe more thinly implemented. Because the substrate may be thin, when thepartition is provided on the rear surface of the display panel 100 orthe front surface of the supporting member 300, a problem may occur inwhich the display panel 100 is not flat and a step is formed in thedisplay panel 100, due to the partition, when the display panel 100 isattached to the supporting member 300. For example, a problem may occurin which the display panel 100 is not flat and a screen is unevenly orroughly seen, due to a shape of the bent portion 712 bounced to orprotruded from the screen of the display panel 100 or due to a separatedportion of the bent portion 712, for example, a portion where the twostraight-line portions contact each other. Such a phenomenon may bereferred to as an “uneven” phenomenon or a “wave” phenomenon of thedisplay panel 100 (hereinafter it is referred to wave phenomenon), butthe term is not limited thereto. This will be described in detail belowwith reference to FIGS. 10 to 12B.

FIG. 10 illustrates an example of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

With reference to FIG. 10, a display panel according to an embodimentmay be implemented by changing a shape of the bent portion 712,described above with reference to FIG. 9B, to a concave shape or a roundshape. This is for solving a wave phenomenon of the display panel bychanging a shape of the bent portion 712. An experimental resultobtained by checking (or testing) the display panel according to anembodiment will be described below with reference to FIGS. 11 and 12.

FIGS. 11A to 12B show experimental results obtained by measuring a rearsurface of a display panel, in a display apparatus according to anembodiment of the present disclosure.

FIGS. 11A and 11B show results obtained by checking (or testing) aportion A and a portion A′ of FIG. 10. The portion A and the portion A′may be disposed in a supporting member, e.g., the supporting member 300.The portion A may be a bent portion 712 provided in a first partition1700 in a first region L, and the portion A′ may be a bent portion 712provided in a first partition 1700 in a second region R. FIG. 11A showsthe portion A of FIG. 10, and FIG. 11B shows the portion A′ of FIG. 10.In FIGS. 11A and 11B, a portion shown in white is a portion where a wavephenomenon occurs. Therefore, it can be seen that the wave phenomenon ofthe display panel occurs less in the portion A′ (in FIG. 11B) than inthe portion A (in FIG. 11A), but the wave phenomenon still occurs.

FIGS. 12A and 12B show results obtained by checking (or testing) aportion B and a portion B′ of FIG. 10. The portion B and the portion B′may be disposed on the supporting member, e.g., the supporting member300. Each of the portion B and the portion B′ may be a bent portion 712provided in a first partition 1700 disposed in a third region C. FIG.12A shows the portion B of FIG. 10, and FIG. 12B shows the portion B′ ofFIG. 10. In FIGS. 12A and 12B, a portion shown in white is a portionwhere the wave phenomenon occurs. Therefore, it can be seen that thewave phenomenon of the display panel occurs less in the portion B′ (inFIG. 12B) than the portion B (in FIG. 12A), but the wave phenomenonstill occurs. Accordingly, it can be seen that even when a shape of thebent portion 712 is modified, the wave phenomenon still occurs.

Therefore, although the inventors have configured a bent portion thatallows a vibration to be laterally or left-right transferred or spread,for controlling a peak or a dip phenomenon caused by a standing wave ofa sound generation device in a lengthwise direction (a lengthwisedirection of a display panel), the wave phenomenon still occurs. Assuch, to solve the wave phenomenon, the inventors have conducted variousexperiments for controlling the peak or the dip phenomenon caused by thestanding wave or decreasing the wave phenomenon. Through the variousexperiments, the inventors have invented a display apparatus having anew structure. Various example embodiments of such a display apparatuswill be described below with reference to FIGS. 13A to 18.

FIGS. 13A to 13G illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

With reference to FIGS. 13A to 13G, a display panel 100 may include afirst region L, a second region R, and a third region C. The firstregion L may be a left region of a rear surface of the display panel100, the second region R may be a right region of the rear surface ofthe display panel 100, and the third region C may be a center region ofthe rear surface of the display panel 100. For example, one or moresound generation devices may be disposed in at least one of the firstregion L, the second region R, and the third region C. The one or moresound generation devices may have one or more of a circular shape and anoval shape, or may include a pair of sound generation devices. An ovalshape may include an elliptical shape, an egg-shape, a rectangular shapewith rounded corners, or other non-circular curved shape having a widthdifferent from its height. Embodiments are not limited to theseexamples. Further, the one or more sound generation devices may vibrate(e.g., directly vibrate) a display panel to generate a sound. Forexample, the one or more sound generation devices may generate a soundhaving a middle-high-pitched sound band. Further, the one or more soundgeneration devices may output a stereo sound.

With reference to FIGS. 13A and 13B, a first sound generation device1800 may be in the first region L of the display panel 100, and a secondsound generation device 1800′ may be in the second region R of thedisplay panel 100. For example, the first sound generation device 1800may be in the first region L of a rear surface of the display panel 100,and the second sound generation device 1800′ may be in the second regionR of the rear surface of the display panel 100. As described above withreference to FIGS. 7 and 8, the first sound generation device 1800 andthe second sound generation device 1800′ may be coupled or connected toa supporting member 300, and may be disposed between the display panel100 and the supporting member 300.

The first sound generation device 1800 may be in the first region L,which may be the left region of the rear surface of the display panel100, and may vibrate the left region of the display panel 100. Thesecond sound generation device 1800′ may be in the second region L,which may be the right region of the rear surface of the display panel100, and may vibrate the right region of the display panel 100. Thefirst sound generation device 1800 and the second sound generationdevice 1800′ may receive different vibration signals, and may beindependently driven. For example, the first sound generation device1800 may generate a sound by using the left region of the display panel100 as a vibration plate, and the second sound generation device 1800′may generate a sound by using the right region of the display panel 100as a vibration plate. Such descriptions may be similarly applied to theexamples of FIGS. 13B to FIG. 16.

In FIG. 13A, the first sound generation device 1800 and the second soundgeneration device 1800′ may be provided as a pair of sound generationdevices. Descriptions of the pair of sound generation devices aresubstantially similar to the descriptions given above with reference tothe examples of FIGS. 5 and 6, and thus, are not repeated. Also, thedescription given above with reference to the examples of FIGS. 7 and 8may be applied to a connection structure of the supporting member 300and the first and second sound generation devices 1800 and 1800′.

In FIG. 13C, a first sound generation device 1900 and a second soundgeneration device 1900′ may each be configured as an oval soundgeneration device. Description of the sound generation device givenabove with reference to the examples of FIGS. 1 and 2 may be applied tothe oval sound generation device, and a bobbin may be configured in anoval shape. When the oval sound generation device is applied, a soundoutput characteristic corresponding to a middle-high-pitched sound bandmay be enhanced. Also, the description given above with reference to theexamples of FIGS. 7 and 8 may be applied to a connection structure of asupporting member and the first and second sound generation devices 1900and 1900′.

In FIG. 13D, a first sound generation device 1300 and a second soundgeneration device 1300′ may each be configured as a circular soundgeneration device. The description of the sound generation device givenabove with reference to the examples of FIGS. 1A to 2B may be applied tothe circular sound generation device. Also, the description given abovewith reference to the examples of FIGS. 7 and 8 may be applied to aconnection structure of a supporting member and the first and secondsound generation devices 1300 and 1300′.

A partition and a pad part are described with reference to FIG. 13A asan example, and the description of the partition and the pad part may besimilarly applied to the examples of FIGS. 13B to 13G. With reference toFIGS. 13A to 13G, a first partition 1700 may be disposed between thedisplay panel 100 and the supporting member 300. For example, the firstpartition 1700 may be between a rear surface of the display panel and afront surface of the supporting member 300. Also, the first partition1700 may be on the supporting member 300. For example, the firstpartition 1700 may be in a periphery of the supporting member 300 or aperiphery of a front surface of the supporting member 300. For example,the first partition 1700 may be in a periphery of the display panel. Forexample, the first partition 1700 may be in a periphery of a rearsurface of the display panel. Also, the first partition 1700 may be awhole region or an entire region of the rear surface of the displaypanel 100 or the supporting member 300. Further, the first partition1700 may be a whole region of four outer sides of the supporting member300 or the rear surface of the display panel 100.

With reference to FIG. 13A, at least two partitions, for example, asecond partition 1700′ and a third partition 1700″, may be between thefirst sound generation device 1800 and the second sound generationdevice 1800′. For example, the second partition 1700′ may be between thefirst region L and the third region C, and the third partition 1700″ maybe between the second region R and the third region C.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be an air gap or a space where a sound may begenerated when the display panel 100 may be vibrated by the first soundgeneration device 1800 and the second sound generation device 1800′. Anair gap or a space that generates or transfers a sound may be referredto as a partition. A partition may be referred to as an “enclosure” or a“baffle,” but the term is not limited thereto. For example, the firstpartition 1700, the second partition 1700′, and the third partition1700″ may be provided in a sealed structure, or may be provided in anunsealed structure.

Each of the first partition 1700, the second partition 1700′, and thethird partition 1700″ may reduce or prevent a sound from leaking to eachof side surfaces of the display panel 100. Thus, the first to thirdpartitions 1700, 1700′, and 1700″ may allow the sound to be output toonly a region in front of the display panel 100, thereby enhancing soundoutput characteristics.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be between the display panel 100 and the supportingmember 300. For example, the first partition 1700, the second partition1700′, and the third partition 1700″ may be between the rear surface ofthe display panel 100 and the front surface of the supporting member300.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be on the supporting member 300. For example, thefirst partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be on the front surface of the supporting member300. The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be on the display panel 100. In the examplesillustrated in FIGS. 13A to 16C, the first partition 1700, the secondpartition 1700′, and the third partition 1700″ are described as being onthe supporting member 300.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be disposed close to a periphery of the rear surfaceof the display panel 100 or the periphery of the front surface of thesupporting member 300, thereby reducing the wave phenomenon seen on ascreen of the display panel 100. The first partition 1700 may beconfigured based on the shape of the display panel 100. Thus,workability may be improved in a process of attaching the display panel100 on the supporting member 300 that supports the rear surface of thedisplay panel 100.

The second partition 1700′ and the third partition 1700″ may separate aleft sound and a right sound respectively generated by the first soundgeneration device 1800 and the second sound generation device 1800′. Avibration of the display panel 100 performed in a space or an air gapdefined as each of the second partition 1700′ and the third partition1700″ may be attenuated or absorbed by a center of the display panel100. Thus, a sound in the left region may not be transferred to a spaceof the right region. Therefore, when the second partition 1700′ and thethird partition 1700″ are provided, the left sound and the right soundmay be separated from each other. Thus, a sound output characteristicmay be enhanced. The first sound generation device 1800 and the secondsound generation device 1800′ may output sounds having amiddle-high-pitched sound band. The first sound generation device 1800and the second sound generation device 1800′ may output a stereo soundby separating the left and right sounds, thereby providing a displayapparatus having a two-channel sound output characteristic. For example,a middle-pitched sound band may be about 200 Hz to 3 kHz, a high-pitchedsound band may be about 3 kHz or more, and a low-pitched sound band maybe about 200 Hz or less. However, embodiments are not limited thereto.

The first sound generation device 1800 may be provided in the firstregion L, which may be the left region; the second sound generationdevice 1800′ may be provided in the second region R, which may be theright region; and a sound generation device may not be provided in thethird region C, which may be the center region. Therefore, thedegradation in sound quality caused by interference may be reduced inthe left region and the right region. Also, a sound characteristiccorresponding to the middle-high-pitched sound band may be furtherenhanced. An area of the third region C may be smaller than each of anarea of the first region L and an area of the second region R.Accordingly, a sound characteristic corresponding to the low-pitchedsound band may be enhanced. The third region C may decrease thedegradation in sound quality caused by interference in the first regionL and the second region R. Accordingly, a sound characteristiccorresponding to the low, middle, and high-pitched sound bands may beenhanced. The descriptions of the first partition 1700, the secondpartition 1700′, and the third partition 1700″ may be similarly appliedto the examples of FIGS. 13B to 16C.

In FIGS. 13A to 16C, the first partition 1700 may be the adhesive memberdescribed above with reference to the example of FIG. 1. The adhesivemember for attaching the supporting member to the display panel may befurther provided between the display panel and the supporting member, asdescribed above with reference to the FIG. 1 example. For example, theadhesive member may be further provided in a periphery of the displaypanel or a periphery of the supporting member.

FIGS. 13A to 16C illustrate examples in which the sound generationdevice is disposed in the left region or the right region, without beingdisposed in a center of the left region (the first region L) or theright region (the second region R) of the display panel 100, butembodiments are not limited thereto. For example, the sound generationdevice may be disposed in the center of the left region (the firstregion L) or the right region (the second region R) of the display panel100. In another example, the sound generation device may beasymmetrically disposed in the left region (the first region L) and theright region (the second region R) of the display panel 100. A stereosound characteristic may be further enhanced when the sound generationdevice is disposed in a biased position in the left region or the rightregion, as compared to when the sound generation device is disposed inthe center of the left region (the first region L) or the right region(the second region R) of the display panel 100.

A partition having a double structure or a dual-structure including twoor more partitions may be provided between the first sound generationdevice 1800 and the second sound generation device 1800′. For example,the left and right regions of the display panel 100 may have the samevibration characteristic when realizing a mono sound where the left andright regions output the same sound. As such, a resonance phenomenon oran interference phenomenon may be maximized in a certain frequency band,causing the reduction in the sound pressure. Therefore, the partitionmay be configured in a structure including two or more partitions, e.g.,for decreasing an influence of a sound characteristic caused by aresonance frequency difference of a middle-high-pitched sound that mayoccur in the first sound generation device 1800 provided in the firstregion L (the left region) and the second sound generation device 1800′provided in the second region R (the right region). When three or morepartitions are provided between the first sound generation device 1800and the second sound generation device 1800′, a sound pressure may beavoided or prevented from being reduced, even when sound interference inthe left and right regions increases, thereby reducing or preventing asound output characteristic from being discontinuously recognized.

Therefore, two or more partitions may be provided in a center region ofthe display panel 100, thereby decreasing an influence of a soundcharacteristic caused by a resonance frequency difference of amiddle-high-pitched sound in the left region and the right region of thedisplay panel 100. When a partition is provided between two soundgeneration devices, a left sound and a right sound may be separated fromeach other, thereby enhancing a stereo characteristic of a sound.Different sounds having the middle-high-pitched sound band may be outputby the two sound generation devices.

As described above with reference to FIGS. 9A to 12B, the bent part,e.g., the bent part 712, may be provided in the first partition 1700 todecrease a peak and a dip phenomenon caused by a standing wave occurringin a lengthwise (or vertical) direction of the first and second soundgeneration devices 1800 and 1800′. The peak may be a phenomenon in whicha sound pressure level bounces in a particular frequency. The dip may bea phenomenon in which generation of a particular frequency issuppressed. Thus, a low sound pressure level may be generated. A soundoutput characteristic of the display apparatus may be reduced by thepeak or the dip phenomenon. The inventors have recognized that the firstpartition 1700 may be implemented in another shape for decreasing a wavephenomenon caused by the bent part. Therefore, the inventors haverecognized that the first partition 1700 may be disposed based on ashape of the display panel 100 without the bent part to decrease thewave phenomenon.

The first partition 1700 may be disposed along a shape, or may be basedon a shape, of the display panel 100. For example, the first partition1700 may have a tetragonal (e.g., rectangular or square) shape, butembodiments are not limited thereto. For example, a shape of the firstpartition 1700 may be modified based on a shape of the display panel100. If the display panel 100 is a curved display panel having a curvedshape or curve shape, or the like, the first partition 1700 may have acorrespondingly curved shape or a curve shape. Accordingly, the firstpartition 1700 may be disposed along a shape, or may be based on ashape, of the display panel 100. Thus, a degree to which the displaypanel 100 is pulled may be reduced when attaching the supporting memberto the display panel 100, thereby reducing or preventing the wavephenomenon.

However, if the first partition 1700 is provided, it may be unable tocontrol the peak and the dip phenomenon caused by the standing wave.Thus, the inventors have recognized that the first partition 1700 mayhave a structure for controlling the peak and the dip phenomenon causedby the standing wave. The structure may be configured to reduce orprevent the wave phenomenon and to enable the peak and the dipphenomenon caused by the standing wave to be easily controlled. Thestructure may not be implemented through a simple procedure, but hasbeen implemented through the various experiments.

Therefore, a pad part may be provided on one or more sides of the firstpartition 1700 for decreasing the peak or the dip phenomenon caused bythe standing wave. For example, the first partition 1700 may include afirst side, and a second side perpendicular to the first side. Aplurality of pad parts 911 and 921 may be provided on the first side.For example the pad parts 911 and 921 may be in at least one of a firstregion L and a second region R. The pad parts 911 and 921 may berespectively provided as one or as a plurality. The first side may bedisposed in a widthwise (or horizontal) direction of the display panelor the supporting member 300, and the second side may be disposed in alengthwise (or vertical) direction of the display panel or thesupporting member 300.

The pad parts 911 and 921 may be disposed in a first direction of thedisplay panel 100 or the supporting member 300. The first direction maybe the widthwise (or horizontal) direction of the display panel 100 orthe supporting member 300, and a second direction may be a directionperpendicular to the first direction and may be the lengthwise (orvertical) direction of the display panel 100 or the supporting member300.

The pad parts 911 and 921 may face (or extend to point toward) the firstsound generation device 1800 and the second sound generation device1800′. For example, the pad part 921 may be disposed in the first regionL to face the first sound generation device 1800, and the pad part 911may be disposed in the second region R to face the second soundgeneration device 1800′. Accordingly, the pad parts 911 and 921 maydecrease the peak or the dip phenomenon caused by the standing wave thatmay occur in a lengthwise (or horizontal) direction of the first soundgeneration device 1800 and the second sound generation device 1800′, andmay allow a vibration to be laterally or left-right transferred orspread, thereby enhancing a sound output characteristic. When the padportions are provided, the wave phenomenon of the display panel may bereduced or prevented.

A shape of a pad part disposed on the supporting member may be providedto reduce or prevent the wave phenomenon from occurring when the displaypanel 100 is pulled when attaching the pad part to the display panel100. Alternatively, a shape of a pad part disposed in the display panel100 may be provided to reduce or prevent the wave phenomenon fromoccurring when the display panel 100 is pulled when attaching the padpart to the display panel 100. Therefore, the inventors have performedvarious experiments on shapes of the pad parts 911 and 921 to reduce thewave phenomenon that occurs when the bent portion is configured asdescribed above with reference to the examples of FIGS. 9 to 12, fordecreasing the peak or the dip phenomenon caused by the standing wave.Accordingly, the shape of the pad parts may not be modified through asimple procedure, but has been modified through the various experiments.For example, the shape of the pad parts may be implemented to reduce orprevent the wave phenomenon, and to enable the peak and the dipphenomenon caused by the standing wave to be easily controlled. The padparts have been implemented in a tetragonal (e.g., rectangular orsquare) shape or a rounded-end tetragonal (e.g., rectangular or square)shape through the various experiments.

A plurality of second pad parts 811 and 821 may be further provided onthe second side of the first partition 1700. One or more second padparts 811 and 821 may be provided on one or more sides of the firstpartition 1700. The second pad parts 811 and 821 may be disposed in atleast one of the first region L and the second region R. For example,the second pad part 821 may be on the second side of the first partition1700 in the first region L, and the second pad part 811 may be on thesecond side of the first partition 1700 in the second region R. Thesecond pad parts 811 and 821 may be symmetrically disposed with respectto the sound generation device. In the example illustrated in FIG. 13A,one or more second pad parts 811 and 821 may be provided on a secondside, perpendicular to a first side, among four sides of the displaypanel 100, but embodiments may further include three or more second padparts 811 and 821 without being limited thereto. The second pad parts811 and 821 may be disposed in the second (e.g., lengthwise or vertical)direction of the display panel 100, and may be provided as one or as aplurality. Further, one or more pad parts 911 and 912 and one or moresecond pad parts 811 and 821 may be disposed to face or disposed towardthe first and second sound generation devices 1800 and 1800′.

Various experiments have been conducted so that the second pad parts 811and 821 may be formed of materials for decreasing a phenomenon in whichthe display panel 100 may be pulled when attaching the supporting memberto the display panel 100. The inventors have recognized that the secondpad parts 811 and 821 in the first partition 1700 may be formed ofmaterials for decreasing a phenomenon in which the display panel 100 ispulled when contacting the display panel 100. Therefore, the inventorshave conducted various experiments on a material that reduces orprevents the wave phenomenon, and enables the peak or the dip phenomenoncaused by the standing wave to be controlled, instead of simply changinga material. The inventors have recognized that the second pad parts 811and 821 may be formed of materials having an adhesive force weaker thanthat of the first partition 1700, based on the various experiments. Whenthe second pad parts 811 and 821 are formed of the same material as thatof the first partition 1700, it has been confirmed that the wavephenomenon may occur at a position at which the second pad parts 811 and821 are disposed. The inventors have recognized that a reason isbecause, where an adhesive force of the first partition is the same asthat of the second pad parts, the display panel may be more pulled atthe positions where the second pad parts are disposed. Thus, the wavephenomenon may occur. For example, when the first partition and thesecond pad parts on the supporting member are formed of materials havingthe same adhesive force, the wave phenomenon may occur where the secondpad parts are disposed when the first partition 1700 and the second padparts on the supporting member are attached to the display panel 100.

The first partition and the second pad parts on the supporting memberare described with reference to the examples of FIGS. 13A to 16C, butembodiments are not limited thereto. A substantially similar descriptionmay also be applied to a case in which the first partition and thesecond pad parts are on the rear surface of the display panel 100. Forexample, when the first partition and the second pad parts on the rearsurface of the display panel 100 are formed of materials having the sameadhesive force, the wave phenomenon can occur where the second pad parts811 and 821 are disposed when the supporting member is attached to thefirst partition and the second pad parts on the rear surface of thedisplay panel 100.

Therefore, the second pad parts 811 and 821 may be formed of materialsthat differ from that of the first partition 1700. Alternatively, thesecond pad parts 811 and 821 may be formed of materials that differ fromthose of the first partition 1700, the second partition 1700′, and thethird partition 1700″. For example, the second pad parts 811 and 821 maybe formed of materials having an adhesive force weaker than that of thefirst partition 1700. The second pad parts 811 and 821 may be formed ofmaterials having an adhesive force weaker than that of the firstpartition 1700, the second partition 1700′, and the third partition1700″. The second pad parts 811 and 821 may be respectively formed ofthe same or different materials.

The second pad parts 811 and 821 may be formed of, for example, asingle-sided tape. The single-sided tape may include a foam materialthat may absorb an impact when contacting the display panel 100. If thesingle-sided tape does not include the foam material, an undesiredabnormal sound may occur due to contacting the display panel 100. Thesingle-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto. When the first partition 1700 and the second pad parts811 and 821 are formed of different materials, the term “differentmaterials” may be the same materials having different adhesive forces.Alternatively, the term “different materials” may be different materialshaving different adhesive forces, but embodiments are not limitedthereto.

Therefore, the second pad parts 811 and 821 may be formed of materialsthat differ from that of the first partition 1700, and the occurrence ofthe wave phenomenon may be reduced due to different adhesive forces whencontacting the display panel 100. The second pad parts 811 and 821 mayfurther reduce the peak or the dip phenomenon caused by the standingwave that occurs due to interference of a reflected wave and aprogressive wave, and may reduce or prevent sound quality from beingreduced by the standing wave or the reflected wave.

The pad parts 911 and 921 may be formed of the same material as that ofthe second pad parts 811 and 821. For example, the pad parts 911 and 921may be formed, e.g., of a single-sided tape. When the pad parts 911 and921 are formed of a single-sided tape, the inventors have recognizedthat the wave phenomenon occurs. Therefore, various experiments havebeen performed so that the pad parts 911 and 921 are formed of materialsfor decreasing a degree to which the display panel 100 is pulled in aprocess of attaching the supporting member on the display panel 100. Theinventors have recognized that the pad parts 911 and 921 in the firstpartition 1700 may be formed of materials for decreasing a degree towhich the display panel 100 may be pulled when contacting the displaypanel 100. Therefore, the inventors have performed various experimentson a material that may reduce or prevent the wave phenomenon and maydecrease the peak or the dip phenomenon caused by the standing wave,instead of simply changing a material. The inventors have recognizedthat the pad parts 911 and 921 may be formed of materials having anadhesive force weaker than that of the second pad parts 811 and 821,based on the various experiments. When the pad parts are formed of thesame material as that of the second pad parts, it has been confirmedthat the wave phenomenon occurs where the pad parts are disposed. Theinventors have recognized that a reason is because, when an adhesiveforce of the second pad portion is the same as that of the pad parts,the display panel is more pulled where the pad parts are disposed. Thus,the wave phenomenon may occur. For example, when the pad parts and thesecond pad parts on the supporting member are formed of materials havingthe same adhesive force, the wave phenomenon may occur where the padparts are disposed when the pad parts and the second pad parts on thesupporting member are attached on the display panel 100.

The pad parts and the second pad parts disposed on the supporting memberare described with reference to the examples of FIGS. 13A to 16C, butembodiments are not limited thereto. For example, a substantiallysimilar description may also be applied to a case in which the pad partsand the second pad parts are disposed on the rear surface of the displaypanel. For example, when the pad parts and the second pad parts on thedisplay panel or the supporting member are formed of materials havingthe same adhesive force, the wave phenomenon may occur where the padparts are disposed when the supporting member is attached to the displaypanel. For example, when the pad parts and the second pad parts on thesupporting member are formed of materials having the same adhesiveforce, the wave phenomenon may occur where the pad parts are disposedwhen the pad portions and the second pad parts on the supporting memberare attached to the display panel. Further, when the pad parts and thesecond pad parts on the rear surface of the display panel are formed ofmaterials having the same adhesive force, the wave phenomenon may occurwhere the pad parts are disposed when the pad parts and the second padparts on the rear surface of the display panel are attached to thesupporting member.

Therefore, the pad parts 911 and 921 may be formed of materials thatdiffer from those of the second pad parts 811 and 821. For example, thepad parts 911 and 921 may be formed of materials having an adhesiveforce weaker than that of the second pad parts 811 and 821. The padparts 911 and 921 may be formed of materials that are softer than thesecond pad parts 811 and 821. For example, the pad parts 911 and 921 maybe formed of a soft foam tape. The soft foam tape may be a sponge type,but embodiments are not limited thereto. As an example, the soft foamtape may be an urethane foam or a polyurethane foam, but embodiments arenot limited thereto. When the second pad parts 811 and 821 and the padparts 911 and 921 are formed of different materials, the term “differentmaterials” may be the same materials having different adhesive forces.Alternatively, the term “different materials” may be different materialshaving different adhesive forces, but embodiments are not limitedthereto. For example, the term “different materials” may be the samematerials having different densities. As a density of a material becomeslower, the material may become softer.

Therefore, when the second pad parts 811 and 821 and the pad parts 911and 921 are formed of different materials, a sound may be furtherenhanced. For example, when the pad parts 911 and 921 are formed ofmaterials that are softer than that of the second pad parts 811 and 821,a sound having a low-pitched sound band to a high-pitched sound band maybe further enhanced, and the wave phenomenon may be further reduced.

Various experiments have been performed such that the second partition1700′ and the third partition 1700″ are formed of materials fordecreasing a degree to which the display panel 100 is pulled whenattaching the supporting member to the display panel 100. The inventorshave recognized that, when the second partition 1700′ and the thirdpartition 1700″ are disposed inside the first partition 1700, then thesecond partition 1700′ and the third partition 1700″ may be formed ofmaterials that differ from that of the first partition 1700 fordecreasing a pull of the display panel 100 caused by an adhesive forcedifference that may occur when attaching the supporting member to thedisplay panel 100.

Therefore, the inventors have performed various experiments on amaterial that reduces or prevents the wave phenomenon, instead of simplychanging a material. The inventors have recognized that the secondpartition 1700′ and the third partition 1700″ may be formed of materialshaving an adhesive force weaker than that of the first partition 1700,based on the various experiments. When the second partition 1700′ andthe third partition 1700″ are formed of the same material as that of thefirst partition 1700, the inventors have recognized that the wavephenomenon may occur due to the second partition 1700′ and the thirdpartition 1700″.

Therefore, when the second partition 1700′ and the third partition 1700″are disposed inside the first partition 1700, then the second partition1700′ and the third partition 1700″ may be formed of materials thatdiffer from that of the first partition 1700 for decreasing the wavephenomenon. The second partition 1700′ and the third partition 1700″ maybe formed, for example, of a single-sided tape, but embodiments are notlimited thereto.

The inventors have recognized that the second partition 1700′ and thethird partition 1700″ may be disposed in the same direction that may bea lengthwise (or vertical) direction of the pad parts 911 and 921 andthe supporting member 300. Thus, when the second partition 1700′ and thethird partition 1700″ are formed of materials that differ from those ofthe pad parts 911 and 921, the wave phenomenon occurs due to the secondpartition 1700′ and the third partition 1700″ when the supporting member300 is attached to the display panel 100.

Therefore, the inventors have recognized that the second partition 1700′and the third partition 1700″ may be formed of the same material as thatof the pad parts 911 and 921. The second partition 1700′ and the thirdpartition 1700″ may be formed, e.g., of a soft foam tape. The soft foamtape may be a sponge type, but embodiments are not limited thereto. Forexample, the soft foam tape may be an urethane foam or a polyurethanefoam, but embodiments are not limited thereto. The second partition1700′ and the third partition 1700″ may be formed of a soft material.Thus, in comparison with a case in which the soft material is notapplied, an area capable of being used as a partition embodiments aremore enlarged, thereby further enhancing a sound having the low-pitchedsound band to the high-pitched sound band.

Therefore, the first partition 1700, the second partition 1700′, and thethird partition 1700″ may be formed of different materials. The firstpartition 1700 may be formed of a double-sided tape, but embodiments arenot limited thereto. For example, the first partition 1700, the secondpartition 1700′, and the third partition 1700″ may be formed ofmaterials having an elasticity that enables compression to be formed tosome extent. For example, the first partition 1700, the second partition1700′, and the third partition 1700″ may be formed of polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto. When the second partition 1700′ and the third partition1700″ are formed of different materials from that of the first partition1700, the wave phenomenon may be further reduced.

One or more pad parts may face or may be disposed toward one or moresound generation devices. For example, third pad parts 913 and 923 maybe further provided on a side facing the first side of the firstpartition 1700. The third pad part 923 may be on the side facing thefirst side of the first partition 1700 in the first region L, and thethird pad part 913 may be on the side facing the first side of the firstpartition 1700 in the second region R. The third pad part 913 may facethe pad part 911, and the third pad part 923 may face the pad part 921.The third pad parts 913 and 923 may be provided as one or as aplurality. The pad parts 911 and 921, the second pad parts 811 and 821,and the third pad parts 913 and 923 may trap a reflected wave from thefirst and second sound generation devices 1800 and 1800′. Thus, the padparts 911 and 921, the second pad parts 811 and 821, and the third padparts 913 and 923 may decrease the peak or the dip phenomenon caused bythe standing wave, thereby enhancing a sound output characteristic.

When the third pad parts 913 and 923 facing the pad parts 911 and 921are formed of materials that differ from those of the pad parts 911 and921, the wave phenomenon may occur due to different adhesive forces whenthe third pad parts 913 and 923 contact the display panel 100.Therefore, the inventors have recognized that, when the third pad parts913 and 923 are formed of the same material as that of the pad parts 911and 921, the wave phenomenon may be reduced, and the occurrence of anabnormal sound may be reduced. The third pad parts 913 and 923 may beformed, e.g., of a soft foam tape. The soft foam tape may be a spongetype, but embodiments are not limited thereto. For example, the softfoam tape may be an urethane foam or a polyurethane foam, butembodiments are not limited thereto. When the third pad parts 913 and923 are formed of materials that are softer than that of the second padparts 811 and 821, a sound having the low-pitched sound band to thehigh-pitched sound band may be further enhanced, and the wave phenomenonmay be further reduced.

Therefore, the second partition 1700′, the third partition 1700″, andthe pad parts 911 and 921 may be formed of materials that differ fromthose of the second pad parts 811 and 821. For example, the secondpartition 1700′, the third partition 1700″, and the pad parts 911 and921 may be formed of materials that are softer than that of the secondpad parts 811 and 821. The second partition 1700′, the third partition1700″, the pad parts 911 and 921, and the third pad parts 913 and 923may be formed of materials that are softer than that of the second padparts 811 and 821. The second partition 1700′, the third partition1700″, and the pad parts 911 and 921 may be formed of the same material.The second partition 1700′, the third partition 1700″, the pad parts 911and 921, and the third pad parts 913 and 923 may be formed of the samematerial. For example, the second partition 1700′, the third partition1700″, and the pad parts 911 and 921 may be formed, e.g., of a soft foamtape. The soft foam tape may be a sponge type, but embodiments are notlimited thereto. For example, the soft foam tape may be an urethane foamor a polyurethane foam, but embodiments are not limited thereto.Therefore, in a case where the pad parts, the third pad parts, thesecond partition, and the third partition disposed in the firstdirection of the display panel or the supporting member are formed ofsoft materials, the wave phenomenon may be reduced or prevented. Thesecond partition and the third partition may be formed of softmaterials, thereby providing a display apparatus that may output anenhanced sound having the low-pitched sound band to the high-pitchedsound band. One or more pad parts may be formed of soft materials, andmay be disposed on and/or under the sound generation device where thewave phenomenon occurs. Thus, the wave phenomenon may be reduced orprevented. The one or more pad parts may include ones of the pad parts911 and 921 and the third pad parts 913 and 923.

The pad parts 911 and 921, the second partition 1700′, and the thirdpartition 1700″ may be formed of materials that differ from those of thesecond pad parts 811 and 821. For example, the second pad parts 811 and821 may be formed of a single-sided tape. The single-sided tape mayinclude a foam material that may absorb an impact when contacting thedisplay panel 100. If the single-sided tape does not include the foammaterial, an undesired abnormal sound may occur due to contacting thedisplay panel 100. The single-sided tape may be formed of, for example,polyurethane, polyolefin, polyethylene, and/or the like, but embodimentsare not limited thereto.

The first partition 1700 may be formed of a material that differs fromthose of the second partition 1700′ and the third partition 1700″. Thefirst partition 1700 may be formed of a material that differs from thoseof the pad parts 911 and 921 and the second pad parts 811 and 821. Thefirst partition 1700 may be formed of a material that differs from thoseof the second pad parts 811 and 821. The second partition 1700′ and thethird partition 1700″ may be formed of materials that differ from thoseof the second pad parts 811 and 821. The pad parts 911 and 921 and thethird pad parts 913 and 923 may be formed of materials that differ fromthose of the second pad parts 811 and 821. The second partition 1700′,the third partition 1700″, the pad parts 911 and 921, and the third padparts 913 and 923 may be formed of materials that differ from those ofthe second pad parts 811 and 821.

The first partition 1700, the second pad parts 811 and 821, and thesecond partition 1700′, the third partition 1700″, the pad parts 911 and921, and the third pad parts 913 and 923 may be formed of differentmaterials. Alternatively, the first partition 1700 and the second padparts 811 and 821 may be formed of materials that differ from those ofthe second partition 1700′, the third partition 1700″, the pad parts 911and 921, and the third pad parts 913 and 923.

The first partition 1700, the second pad parts 811 and 821, the secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,and the third pad parts 913 and 923 may be formed of materials having asame adhesive force and/or a same density. Alternatively, the firstpartition 1700 and the second pad parts 811 and 821 may be formed ofmaterials having an adhesive force and/or a density that differs fromthose of materials of the second partition 1700′, the third partition1700″, the pad parts 911 and 921, and the third pad parts 913 and 923.As another alternative, the first partition 1700, the second pad parts811 and 821, the second partition 1700′, the third partition 1700″, thepad parts 911 and 921, and the third pad parts 913 and 923 may be formedof materials having different adhesive forces and/or densities. When thesecond partition 1700′, the third partition 1700″, the pad parts 911 and921, the third pad parts 913 and 923, and the second pad parts 811 and821 are formed of materials that differ from that of the first partition1700, the wave phenomenon may be reduced or prevented, and the peak orthe dip phenomenon caused by the standing wave may be reduced, therebyenhancing a sound output characteristic and enhancing a sound having thelow-pitched sound band to the high-pitched sound band.

As a size of the pad parts 911 and 921, a size of the second pad parts811 and 821, and a size of the third pad parts 913 and 923 increase, itmay be easier to control the peak or the dip phenomenon caused by thestanding wave. For example, if a width of the pad part 911 and a widthof the second pad part 811 are less than 10 mm, it may be difficult tocontrol the peak or the dip phenomenon caused by the standing wave.Therefore, the width of the pad part 911 and the width of the second padpart 811 may each be set to be to 10 mm or more. The size of the thirdpad part 913 may be equal to that of the pad part 911, but embodimentsare not limited thereto. For example, a width of the third pad part 913may be 10 mm or more, and a length of the third pad part 913 may be 50mm or less. However, embodiments are not limited thereto. A width of thefirst partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be 10 mm or more, but embodiments are not limitedthereto. The size of the pad part 911, the size of the second pad part811, and the size of the third pad part 913 in the second region R maybe similarly applied respectively to the pad part 921, the second padpart 821, and the third pad part 923 in the first region L.

The size of the pad parts 911 and 921 may be greater than or equal tothat of the second pad parts 811 and 821, but embodiments are notlimited thereto. A length of the pad part 911 may be equal to or longerthan that of the second pad part 811. For example, the length of the padpart 911 may be 50 mm or less, and a length of the second pad part 811may be 30 mm or less. However, embodiments are not limited thereto. Thelength of the pad part 911 and the length of the second pad part 811 maybe similarly respectively applied to the pad part 921 and the second padpart 821 provided in the first region L.

A shape of the pad parts 911 and 921, a shape of the second pad parts811 and 821, and a shape of the third pad parts 913 and 923 may be atetragonal (e.g., rectangular or square) shape or a rounded-endtetragonal (e.g., rectangular or square) shape. However, the shape ofthe pad parts 911 and 921, the shape of the second pad parts 811 and821, and the shape of the third pad parts 913 and 923 may be provided asvarious shapes, such as a circular shape. Embodiments are not limited tothese examples.

A partition may be configured based on a shape of a display panel, andone or more pad parts may be provided on at least one side of thepartition, thereby decreasing the wave phenomenon and reducing the peakor the dip phenomenon caused by the standing wave. Accordingly, a soundoutput characteristic may be enhanced. The partition and the pad partsmay be formed of different materials. Thus, the occurrence of anabnormal sound may be prevented, thereby enhancing a sound outputcharacteristic. A pad part, a third pad part, a second partition, and athird partition, disposed in a first direction of the display panel or asupporting member, may be formed of materials that differ from that of asecond pad part disposed in a second direction of the display panel,thereby providing a display apparatus that may reduce the wavephenomenon, and may output a more enhanced sound having the low-pitchedsound band to the high-pitched sound band. The pad part may be providedwhere the wave phenomenon may occur, and may be formed of a softmaterial, thereby providing a display apparatus that may decrease thepeak or the dip phenomenon caused by the standing wave, may reduce thewave phenomenon, and may output a more enhanced sound having thelow-pitched sound band to the high-pitched sound band.

With reference to FIGS. 13E to 13G, an example in which a portion of thefirst partition 1700, the second partition 1700′, and the thirdpartition 1700″ are divisionally disposed to have the same size isillustrated. Therefore, efficiency may be enhanced when the partition isprovided. For example, when the partition is applied to a large-screendisplay apparatus, efficiency may be enhanced when the partition isprovided in a large screen.

In FIGS. 13E to 13G, numbers in circles represent that sides of thepartition have the same size. For example, in FIG. 13E, the firstpartition 1700 may be divided into two portions, and the two portionsmay have the same size {circle around (1)} in a widthwise (orhorizontal) direction of the display panel 100 or the supporting member300, and other portions of the first partition 1700 may have the samesize {circle around (1)} in a lengthwise (or vertical) direction of thedisplay panel 100 or the supporting member 300. With reference to FIG.13F, portions of the first partition 1700 may the same size {circlearound (1)} in the widthwise (or horizontal) direction of the displaypanel 100 or the supporting member 300, and other portions of the firstpartition 1700 may have the same size {circle around (2)} in thelengthwise (or vertical) direction of the display panel 100 or thesupporting member 300. With reference to FIG. 13G, portions of the firstpartition 1700 may have the same size {circle around (1)} in a widthwise(or horizontal) direction of the display panel 100 or the supportingmember 300, and other portions of the first partition 1700 may have thesame size {circle around (2)} in a lengthwise (or vertical) direction ofthe display panel 100 or the supporting member 300.

Therefore, the first partition 1700 may be divisionally disposed, e.g.,disposed to divide the display panel 100 or the supporting member 300,in the widthwise direction or the lengthwise direction. The firstpartition 1700 may be divisionally disposed in a first direction or asecond direction. Accordingly, efficiency may be enhanced when thepartition is provided. However, embodiments of the present disclosureare not limited thereto, and portions of the first partition 1700, thesecond partition 1700′, and the third partition 1700″ may have varioussizes.

In FIGS. 13E to 13G, a pair of sound generation devices has beendescribed by way of example. Descriptions given above with reference tothe examples of FIGS. 13E to 13G may be similarly applied to a circularsound generation devise and an oval sound generation device. However,embodiments are not limited to these examples. The descriptions givenabove with reference to the examples of FIGS. 13E to 13G may besimilarly applied to the examples of FIGS. 14A to 16C.

FIGS. 14A to 14C illustrate examples of a sound generation device and apartition according to an embodiment of the present disclosure.

In FIGS. 14A to 14C, duplicate descriptions as those given above withreference to the examples of FIGS. 13A to 13G are omitted or will bebriefly provided. For example, descriptions of a sound generationdevice, a pad part, a second pad part, and a third pad part are omittedor will be briefly provided. Also, a partition and a pad part will bedescribed with reference to the FIG. 14A example, and the descriptionsof the partition and the pad part may be similarly applied to examplesof FIGS. 14B and 14C.

With reference to FIGS. 14A to 14C, a first partition 1700 may bedisposed between a display panel and a supporting member 300. Forexample, the first partition 1700 may be between a rear surface of thedisplay panel 100 and a front surface of the supporting member 300. Thefirst partition 1700 may be on the supporting member 300. For example,the first partition 1700 may be in a periphery of the supporting member300 or a periphery of the front surface of the supporting member 300.The first partition 1700 may be in a periphery of the display panel 100.For example, the first partition 1700 may be in a periphery of a rearsurface of the display panel 100. The first partition 1700 may be awhole or entire region of the rear surface of the display panel 100 orthe supporting member 300. The first partition 1700 may be a whole orentire region of four outer sides of the supporting member 300 or therear surface of the display panel 100.

The first partition 1700 may be disposed along a shape, or may be basedon a shape, of the display panel. For example, the first partition 1700may have a tetragonal (e.g., rectangular or square) shape, butembodiments are not limited thereto. For example, a shape of the firstpartition 1700 may be modified based on a shape of the display panel. Ifthe display panel is a curved display panel having a curved shape orcurve shape, or the like, the first partition 1700 may have acorrespondingly curved shape or curve shape. Accordingly, the firstpartition 1700 may be disposed along a shape, or may be based on ashape, of the display panel, thereby reducing or preventing the wavephenomenon.

With reference to FIG. 14A, at least two partitions, for example, asecond partition 1700′ and a third partition 1700″, may be disposedbetween a first sound generation device 1800 and a second soundgeneration device 1800′. For example, the second partition 1700′ may bedisposed between a first region L and a third region C, and the thirdpartition 1700″ may be disposed between a second region R and the thirdregion C.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be disposed between the display panel and thesupporting member 300. For example, the first partition 1700, the secondpartition 1700′, and the third partition 1700″ may be between the rearsurface of the display panel and the front surface of the supportingmember 300. The first partition 1700, the second partition 1700′, andthe third partition 1700″ may be on the supporting member 300. The firstpartition 1700, the second partition 1700′, and the third partition1700″ may be on the display panel.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be disposed close to a periphery of the rear surfaceof the display panel or a periphery of the front surface of thesupporting member 300, thereby reducing the wave phenomenon seen on ascreen of the display panel. The first partition 1700 may be configuredbased on the shape of the display panel. Thus, workability may beimproved when attaching the display panel to the supporting member 300that supports the rear surface of the display panel.

The pad parts 911 and 921 may be disposed in a first direction of thedisplay panel or the supporting member 300. The first direction may be awidthwise (or horizontal) direction of the display panel or thesupporting member 300, and a second direction may be a directionperpendicular to the first direction and may be a lengthwise directionof the display panel or the supporting member 300.

Second pad parts 811 and 821 may be further provided on a second side ofthe first partition 1700. One or more second pad parts 811 and 821 maybe provided on one or more sides of the first partition 1700. The secondpad parts 811 and 821 may be disposed in at least one of the firstregion L and the second region R.

One or more pad parts may be disposed to face or disposed toward one ormore sound generation devices. For example, third pad parts 913 and 923may be further provided on a side facing a first side of the firstpartition 1700. The third pad part 923 may be on the side facing thefirst side of the first partition 1700 in the first region L, and thethird pad part 913 may be on the side facing the first side of the firstpartition 1700 in the second region R. The third pad part 913 may facethe pad part 911, and the third pad part 923 may face the pad part 921.The third pad parts 913 and 923 may be provided as one or as aplurality.

One or more fourth pad parts 813 and 823 may be further provided on aside facing the second side of the first partition 1700. For example,the fourth pad part 823 may be on a side facing the second side of thefirst partition 1700 in the first region L, and the fourth pad part 813may be on a side facing the second side of the first partition 1700 inthe second region R. The fourth pad part 823 may face the second padpart 821, and the fourth pad part 813 may face the second pad part 811.The fourth pad parts 813 and 823 may be provided as one or as aplurality. Therefore, the pad parts 911 and 921, the second pad parts811 and 821, the third pad parts 913 and 923, and the fourth pad parts813 and 823 may trap a reflected wave from the first and second soundgeneration devices 1800 and 1800′. Thus, the pad parts 911 and 921, thesecond pad parts 811 and 821, the third pad parts 913 and 923, and thefourth pad parts 813 and 823 may decrease the peak or the dip caused bythe standing wave, thereby enhancing a sound output characteristic. Thesecond pad parts 811 and 821 and the fourth pad parts 813 and 823 mayfurther reduce the peak or the dip phenomenon caused by the standingwave that occurs due to interference of a reflected wave and aprogressive wave, and may avoid or prevent sound quality from beingreduced by the standing wave or the reflected wave.

When the fourth pad parts 813 and 823, disposed to face the second padparts 811 and 821, are formed of materials that differ from those of thesecond pad parts 811 and 821, the wave phenomenon may occur due todifferent adhesive forces when the fourth pad parts 813 and 823 contactthe display panel 100. Therefore, the inventors have recognized that,when the fourth pad parts 813 and 823 are formed of the same material asthat of the second pad parts 811 and 821, the wave phenomenon may bereduced, and the occurrence of an abnormal sound may be reduced.Therefore, the fourth pad parts 813 and 823 may be formed of the samematerial as that of the second pad parts 811 and 821. For example, thefourth pad parts 813 and 823 may be formed of a single-sided tape. Thesingle-sided tape may include a foam material that may absorb an impactwhen contacting the display panel. If the single-sided tape does notinclude the foam material, an undesired abnormal sound may occur due tocontacting the display panel 100. The single-sided tape may be formedof, for example, polyurethane, polyolefin, polyethylene, and/or thelike, but embodiments are not limited thereto.

The first partition 1700 may be formed of a material that differs fromthose of the second partition 1700′ and the third partition 1700″. Thefirst partition 1700 may be formed of a double-sided tape, butembodiments are not limited thereto. For example, the first partition1700 may be formed of a material having an elasticity that may enablecompression to be formed to some extent. For example, the firstpartition 1700 may be formed of polyurethane, polyolefin, polyethylene,and/or the like, but embodiments are not limited thereto.

The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821.For example, the second pad parts 811 and 821 may be formed of asingle-sided tape. The single-sided tape may include a foam materialthat may absorb an impact when contacting the display panel. Thesingle-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto.

The second partition 1700′, the third partition 1700″, and the pad parts911 and 921 may be formed of materials that differ from those of thesecond pad parts 811 and 821. For example, the second partition 1700′,the third partition 1700″, the pad parts 911 and 921, and the third padparts 913 and 923 may be formed of a soft foam tape. The soft foam tapemay be a sponge type, but embodiments are not limited thereto. Forexample, the soft foam tape may be an urethane foam or a polyurethanefoam, but embodiments are not limited thereto. The second partition1700′ and the third partition 1700″ may be formed of a soft material.Thus, in comparison with a case in which the soft material is notapplied, an area capable of being used as a partition may be moreenlarged, thereby further enhancing a sound having the low-pitched soundband to the high-pitched sound band.

The second partition 1700′, the third partition 1700″, the pad parts 911and 921, and the third pad parts 913 and 923 may be formed of materialsthat differ from those of the second pad parts 811 and 821 or the fourthpad parts 813 and 823. For example, the second partition 1700′ and thethird partition 1700″ may be formed of materials that are softer thanthose of the second pad parts 811 and 821 or the fourth pad parts 813and 823. The second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923 may be formed ofmaterials that are softer than those of the second pad parts 811 and 821or the fourth pad parts 813 and 823.

The second partition 1700′, the third partition 1700″, and the pad parts911 and 921 may be formed of the same material. The second partition1700′, the third partition 1700″, the pad parts 911 and 921, and thethird pad parts 913 and 923 may be formed of the same material. Forexample, the second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923 may be formed ofa soft foam tape. The soft foam tape may be a sponge type, butembodiments are not limited thereto. For example, the soft foam tape maybe an urethane foam or a polyurethane foam, but embodiments are notlimited thereto.

The second pad parts 811 and 821 and the fourth pad parts 813 and 823may be formed of the same material. For example, the second pad parts811 and 821 and the fourth pad parts 813 and 823 may be formed of asingle-sided tape. The single-sided tape may include a foam materialthat may absorb an impact when contacting the display panel. Thesingle-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto.

Therefore, when the pad parts, the third pad parts, the secondpartition, and the third partition disposed in a first direction of thedisplay panel or the supporting member are formed of soft materials, thewave phenomenon may be reduced or prevented. The second partition andthe third partition may be formed of soft materials, thereby providing adisplay apparatus that may output an enhanced sound having thelow-pitched sound band to the high-pitched sound band. One or more padparts may be formed of soft materials, and may be disposed on and/orunder the sound generation device where the wave phenomenon may occur.Thus, the wave phenomenon may be reduced or prevented. The one or morepad parts may include ones of the pad parts 911 and 921 and the thirdpad parts 913 and 923.

The first partition 1700 may be formed of a material that differs fromthose of the second partition 1700′ and the third partition 1700″. Thefirst partition 1700 may be formed of a material that differs from thoseof the pad parts 911 and 921 and the third pad parts 913 and 923. Thefirst partition 1700 may be formed of a material that differs from thoseof the second pad parts 811 and 821. The first partition 1700 may beformed of a material that differs from those of the second pad parts 811and 821 and the fourth pad parts 813 and 823.

The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821.The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821and the fourth pad parts 813 and 823. The pad parts 911 and 921 and thethird pad parts 913 and 923 may be formed of materials that differ fromthose of the second pad parts 811 and 821. The pad parts 911 and 921 andthe third pad parts 913 and 923 may be formed of materials that differfrom those of the second pad parts 811 and 821 and the fourth pad parts813 and 823. The second partition 1700′, the third partition 1700″, thepad parts 911 and 921, and the third pad parts 913 and 923 may be formedof materials that differ from those of the second pad parts 811 and 821.The second partition 1700′, the third partition 1700″, the pad parts 911and 921, and the third pad parts 913 and 923 may be formed of materialsthat differ from those of the second pad parts 811 and 821 and thefourth pad parts 813 and 823.

The first partition 1700, and the second pad parts 811 and 821, and thefourth pad parts 813 and 823 may be formed of materials that differ fromthose of the second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923. Alternatively,the first partition 1700, and the second pad parts 811 and 821 and thefourth pad parts 813 and 823, and the second partition 1700′, the thirdpartition 1700″, the pad parts 911 and 921, and the third pad parts 913and 923 may be formed of different materials. For example, the firstpartition 1700, the second pad parts 811 and 821, and the fourth padpart 813 and 823 may be formed of materials having an adhesive forceand/or a density that differs from those of materials of the secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,and the third pad parts 913 and 923. Alternatively, the first partition1700, the second pad parts 811 and 821, the fourth pad parts 813 and823, the second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923 may be formed ofdifferent materials of an adhesive force and/or density. When the secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,the third pad parts 913 and 923, the second pad parts 811 and 821, andthe fourth pad parts 813 and 823 are formed of materials that differfrom that of the first partition 1700, the wave phenomenon may bereduced or prevented, and the peak or the dip phenomenon caused by thestanding wave may be reduced, thereby enhancing a sound outputcharacteristic and enhancing a sound having the low-pitched sound bandto the high-pitched sound band.

As a size of the pad parts 911 and 921, a size of the second pad parts811 and 821, a size of the third pad parts 913 and 923, and a size ofthe fourth pad parts 813 and 823 increase, it may be easier to controlthe peak or the dip phenomenon caused by the standing wave. For example,if a width of the pad part 911 and a width of the second pad part 811are less than 10 mm, it may be difficult to control the peak or the dipphenomenon caused by the standing wave. Therefore, the width of the padpart 911 and the width of the second pad part 811 may each be set to be10 mm or more. The size of the third pad parts 913 and 923 may be equalto that of the pad parts 911 and 921, but embodiments are not limitedthereto. For example, a width of the third pad part 913 may be 10 mm ormore, and a length of the third pad part 913 may be 50 mm or less.However, embodiments are not limited thereto. The size of the fourth padpart 813 may be equal to that of the second pad part 811, butembodiments are not limited thereto. For example, a width of the fourthpad part 813 may be 10 mm or more, and a length of the fourth pad part813 may be 30 mm or less. However, embodiments are not limited thereto.

A width of the first partition 1700, the second partition 1700′, and thethird partition 1700″ may be 10 mm or more, but embodiments are notlimited thereto. The size of the pad part 911, the size of the secondpad part 811, the size of the third pad part 913, and the size of thefourth pad part 813 may be similarly respectively applied to the padpart 921, the second pad part 821, the third pad part 923, and thefourth pad part 823 in the first region L.

The size of the pad parts 911 and 921 may be greater than or equal tothat of the second pad parts 811 and 821 or that of the fourth pad parts813 and 823, but embodiments are not limited thereto. A length of thepad part 911 may be equal to or longer than that of the second pad part811. For example, the length of the pad part 911 may be 50 mm or less,and a length of the second pad part 811 may be 30 mm or less. However,embodiments are not limited thereto. The length of the pad part 911 andthe length of the second pad part 811 may be similarly respectivelyapplied to the pad part 921 and the second pad part 821 in the firstregion L. The size of the fourth pad parts 813 and 823 may be equal tothat of the second pad parts 811 and 821, but embodiments are notlimited thereto. For example, a length of the fourth pad part 813 may be30 mm or less, and a width of the fourth pad part 813 may be 10 mm ormore. However, embodiments are not limited thereto.

A shape of the pad parts 911 and 921, a shape of the second pad parts811 and 821, a shape of the third pad parts 913 and 923, and a shape ofthe fourth pad parts 813 and 823 may be a tetragonal (e.g., rectangularor square) shape or a rounded-end tetragonal (e.g., rectangular orsquare) shape. However, the shape of the pad parts 911 and 921, theshape of the second pad parts 811 and 821, the shape of the third padparts 913 and 923, and the shape of the fourth pad parts 813 and 823 maybe provided as various shapes, such as a circular shape. Embodiments arenot limited to these examples.

Therefore, a partition may be configured based on a shape of a displaypanel, and one or more pad parts may be provided on at least one side ofthe partition, thereby reducing the peak or the dip phenomenon caused bythe standing wave, decreasing the wave phenomenon, and enhancing a soundoutput characteristic. The partition and the pad parts may be formed ofdifferent materials. Thus, the occurrence of an abnormal sound may bereduced or prevented, thereby enhancing a sound output characteristic. Apad part, a third pad part, a second partition, and a third partitiondisposed in a first direction of the display panel or a supportingmember may be formed of materials that differ from that of a second padpart and a fourth pad part disposed in a second direction of the displaypanel, thereby providing a display apparatus that may reduce the wavephenomenon, and may output a more enhanced sound having the low-pitchedsound band to the high-pitched sound band. The pad part may be providedwhere the wave phenomenon may occur, and may be formed of a softmaterial, thereby providing a display apparatus that may decrease thepeak or the dip phenomenon caused by the standing wave, may reduce thewave phenomenon, and may output a more enhanced sound having thelow-pitched sound band to the high-pitched sound band.

FIGS. 15A to 15C illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

In FIGS. 15A to 15C, duplicate descriptions as descriptions given abovewith reference to FIGS. 13A to 13G are omitted or will be brieflyprovided. For example, descriptions of a sound generation device, a padpart, a second pad part, and a third pad part are omitted or will bebriefly provided. A partition and a pad part will be described withreference to FIG. 15A by way of example, and the descriptions of thepartition and the pad part may be similarly applied to the examples ofFIGS. 15B and 15C.

With reference to FIGS. 15A to 15C, a first partition 1700 may bedisposed between a display panel and a supporting member 300. Forexample, the first partition 1700 may be between a rear surface of thedisplay panel and a front surface of the supporting member 300. Thefirst partition 1700 may be on the supporting member 300. For example,the first partition 1700 may be in a periphery of the supporting member300 or a periphery of the front surface of the supporting member 300.The first partition 1700 may be in a periphery of the display panel. Forexample, the first partition 1700 may be in a periphery of a rearsurface of the display panel. The first partition 1700 may be a whole orentire region of the rear surface of the display panel or the supportingmember 300. The first partition 1700 may be a whole or entire region offour outer sides of the supporting member or the rear surface of thedisplay panel.

The first partition 1700 may be disposed along a shape, or may be basedon a shape, of the display panel. For example, the first partition 1700may have a tetragonal (e.g., rectangular or square) shape, butembodiments are not limited thereto. For example, a shape of the firstpartition 1700 may be modified based on a shape of the display panel. Ifthe display panel is a curved display panel having a curved shape orcurve shape, or the like, the first partition 1700 may have acorrespondingly curved shape or curve shape. Accordingly, the firstpartition 1700 may be disposed along a shape, or may be based on ashape, of the display panel, thereby reducing or preventing the wavephenomenon.

With reference to FIG. 15A, at least two partitions, for example, asecond partition 1700″ and a third partition 1700″, may be disposedbetween a first sound generation device 1800 and a second soundgeneration device 1800′. For example, the second partition 1700′ may bebetween a first region L and a third region C, and the third partition1700″ may be between a second region R and the third region C.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be on the supporting member 300. For example, thefirst partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be in the periphery of the supporting member 300 orthe front surface of the supporting member 300. The first partition1700, the second partition 1700′, and the third partition 1700″ may beon the display panel.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be disposed close to a periphery of a rear surfaceof the display panel or the periphery of the front surface of thesupporting member 300, thereby reducing the wave phenomenon seen on ascreen of the display panel. The first partition 1700 may be configuredbased on the shape of the display panel. Thus, workability may beimproved in a process of attaching the display panel to the supportingmember 300 that supports the rear surface of the display panel.

Pad parts 911 and 921 may be disposed in a first direction of thedisplay panel or the supporting member 300. The first direction may be awidthwise (or horizontal) direction of the display panel 100 or thesupporting member 300, and a second direction may be a directionperpendicular to the first direction and may be a lengthwise (orvertical) direction of the display panel 100 or the supporting member300.

Second pad parts 811 and 821 may be further provided on a second side ofthe first partition 1700. One or more second pad parts 811 and 821 maybe provided on one or more sides of the first partition 1700. The secondpad parts 811 and 821 may be disposed in at least one of the firstregion L and the second region R.

One or more pad parts may face or may be disposed toward one or moresound generation devices. For example, third pad parts 913 and 923 maybe further provided on a side facing a first side of the first partition1700. The third pad part 923 may be on the side facing the first side ofthe first partition 1700 in the first region L, and the third pad part913 may be disposed on the side facing the first side of the firstpartition 1700 in the second region R. Also, the third pad part 913 mayface the pad part 911, and the third pad part 923 may face the pad part921. The third pad parts 913 and 923 may be provided as one or as aplurality. Therefore, the pad parts 911 and 921, the second pad parts811 and 821, the third pad parts 913 and 923, and the fourth pad parts813 and 823 may trap a reflected wave from the first and second soundgeneration devices 1800 and 1800′. Thus, the pad parts 911 and 921, thesecond pad parts 811 and 821, the third pad parts 913 and 923, and thefourth pad parts 813 and 823 may decrease the peak or the dip phenomenoncaused by the standing wave, thereby enhancing a sound outputcharacteristic. The second pad parts 811 and 821 may further reduce thepeak or the dip phenomenon caused by the standing wave that may occurdue to interference of a reflected wave and a progressive wave, and mayavoid or prevent sound quality from being reduced by the standing waveor the reflected wave.

One or more first members 832 may be further provided on one or moresides of the second partition 1700′. One or more second members 831 maybe further provided on one or more sides of the third partition 1700″.The first member 832 and the second member 831 may be disposed betweenthe second pad parts 811 and 821, and may be disposed in the thirdregion C. The first member 832 and the second member 831 may reduce orprevent vibrations generated by the first and second sound generationdevices 1800 and 1800′ from passing over, through, or across the secondpartition 1700′ and the third partition 1700″. Therefore, the firstmember 832 and the second member 831 may control a wave or a vibration,which may be transferred or spread to the first region L and/or theright region R, between the second partition 1700′ and the thirdpartition 1700″. Accordingly, a display apparatus having a more enhancedsound output characteristic may be provided.

The first member 832 and the second member 831 may respectively besymmetrically or asymmetrically provided with respect to the first soundgeneration device 1800. For example, the first member 832 may be on,over, or under a line of the second member 831 with respect to the firstsound generation device 1800, e.g., in a vertical direction. When thefirst member 832 and the second member 831 are provided as one body, thefirst member 832 and the second member 831 may be symmetrically providedwith respect to the first sound generation device 1800. For example, thefirst member 832 and the second member 831 may be provided on the sameline with respect to the first sound generation device 1800. When thefirst member 832 and the second member 831 are provided as one body, thefirst member 832 and the second member 831 may be asymmetricallyprovided with respect to the first sound generation device 1800. Forexample, with respect to the first sound generation device 1800, thefirst member 832 may be disposed on a same line as the first soundgeneration device 1800, and the second member 831 may be disposed underthe first sound generation device 1800, e.g., in a vertical direction.However, embodiments are not limited thereto.

The first member 832 and the second member 831 may be formed of one ormore of: a double-sided tape, a single-sided tape, an adhesive, and/or abond, but embodiments are not limited thereto. The first member 832 andthe second member 831 may be disposed in the widthwise (or horizontal)direction of the display panel 100 or the supporting member 300. Thus,when the first member 832 and the second member 831 are formed ofmaterials that differ from those of the second pad parts 811 and 821,the wave phenomenon may occur due to different adhesive forces whencontacting the display panel. When the first member 832 and the secondmember 831 are formed of the same material as that of the second padparts 811 and 821, the wave phenomenon may be reduced, and theoccurrence of an abnormal sound may be reduced. Therefore, the firstmember 832 and the second member 831 may be formed of the same materialas that of the second pad parts 811 and 821. For example, the firstmember 832 and the second member 831 may be formed of a single-sidedtape. The single-sided tape may include a foam material that may absorban impact when contacting the display panel. If the single-sided tapedoes not include the foam material, an undesired abnormal sound mayoccur due to contacting the display panel. The single-sided tape may beformed of, for example, polyurethane, polyolefin, polyethylene, and/orthe like, but embodiments are not limited thereto.

The first partition 1700 may be formed of a material that differs fromthose of the second partition 1700′ and the third partition 1700″. Thefirst partition 1700 may be formed of a double-sided tape, butembodiments are not limited thereto. For example, the first partition1700 may be formed of a material having an elasticity that may enablecompression to be formed to some extent. For example, the firstpartition 1700 may be formed of polyurethane, polyolefin, polyethylene,and/or the like, but embodiments are not limited thereto.

The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821.For example, the second pad parts 811 and 821 may be formed of asingle-sided tape. The single-sided tape may include a foam materialthat may absorb an impact when contacting the display panel. Thesingle-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto.

The second partition 1700′, the third partition 1700″, and the pad parts911 and 921 may be formed of materials that differ from those of thesecond pad parts 811 and 821. For example, the second partition 1700′,the third partition 1700″, the pad parts 911 and 921, and the third padparts 913 and 923 may be formed of a soft foam tape. The soft foam tapemay be a sponge type, but embodiments are not limited thereto. Forexample, the soft foam tape may be an urethane foam or a polyurethanefoam, but embodiments are not limited thereto. The second partition1700′ and the third partition 1700″ may be formed of a soft material.Thus, in comparison with a case in which the soft material is notapplied, an area capable of being used as a partition may be moreenlarged, thereby further enhancing a sound having the low-pitched soundband to the high-pitched sound band.

The second partition 1700′, the third partition 1700″, and the pad parts911 and 921 may be formed of the same material. The second partition1700′, the third partition 1700″, the pad parts 911 and 921, and thethird pad parts 913 and 923 may be formed of the same material. Forexample, the second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923 may be formed ofa soft foam tape. The soft foam tape may be a sponge type, butembodiments are not limited thereto. For example, the soft foam tape maybe an urethane foam or a polyurethane foam, but embodiments are notlimited thereto.

The second pad parts 811 and 821 and the first and second members 832and 831 may be formed of the same material. For example, the second padparts 811 and 821 and the first and second members 832 and 831 may beformed of a single-sided tape. The single-sided tape may include a foammaterial that may absorb an impact when contacting the display panel.The single-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto.

Therefore, when the pad parts, the third pad parts, the secondpartition, and the third partition disposed in a first direction of thedisplay panel or the supporting member are formed of soft materials, thewave phenomenon may be reduced or prevented. The second partition andthe third partition may be formed of soft materials, thereby providing adisplay apparatus that may output an enhanced sound having thelow-pitched sound band to the high-pitched sound band. One or more padparts may be formed of soft materials, and may be disposed on and/orunder the sound generation device where the wave phenomenon may occur.Thus, the wave phenomenon may be reduced or prevented. The one or morepad parts may include ones of the pad parts 911 and 921 and the thirdpad parts 913 and 923.

The first partition 1700 may be formed of a material that differs fromthose of the second partition 1700′ and the third partition 1700″. Thefirst partition 1700 may be formed of a material that differs from thoseof the pad parts 911 and 921 and the third pad parts 913 and 923. Thefirst partition 1700 may be formed of a material that differs from thoseof the second pad parts 811 and 821. The first partition 1700 may beformed of a material that differs from those of the second pad parts 811and 821 and the first and second members 832 and 831.

The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821.The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821and the first and second members 832 and 831. The first partition 1700may be formed of a material that differs from those of the second padparts 811 and 821 and the first and second members 832 and 831.

The pad parts 911 and 921 and the third pad parts 913 and 923 may beformed of materials that differ from those of the second pad parts 811and 821. The pad parts 911 and 921 and the third pad parts 913 and 923may be formed of materials that differ from those of the second padparts 811 and 821 and the first and second members 832 and 831. Thesecond partition 1700′, the third partition 1700″, the pad parts 911 and921, and the third pad parts 913 and 923 may be formed of materials thatdiffer from those of the second pad parts 811 and 821. The secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,and the third pad parts 913 and 923 may be formed of materials thatdiffer from those of the second pad parts 811 and 821 and the first andsecond members 832 and 831.

The first partition 1700, the second pad parts 811 and 821, and thefirst and second members 832 and 831 may be formed of materials thatdiffer from those of the second partition 1700′, the third partition1700″, the pad parts 911 and 921, and the third pad parts 913 and 923.Alternatively, the first partition 1700, and the second pad parts 811and 821 and the first and second members 832 and 831, and the secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,and the third pad parts 913 and 923 may be formed of differentmaterials.

For example, the first partition 1700, and the second pad parts 811 and821 and the first and second members 832 and 831 may be formed ofmaterials having an adhesive force and/or a density that differs fromthose of materials of the second partition 1700′, the third partition1700″, the pad parts 911 and 921, and the third pad parts 913 and 923.Alternatively, the first partition 1700, and the second pad parts 811and 821 and the first and second members 832 and 831, and the secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,and the third pad parts 913 and 923 may be formed of different materialsof a different adhesive force and/or density. When the second partition1700′, the third partition 1700″, the pad parts 911 and 921, and thethird pad parts 913 and 923 may be formed of materials that differ fromthat of the first partition 1700, the wave phenomenon may be reduced orprevented, and the peak or the dip phenomenon caused by the standingwave may be reduced, thereby enhancing a sound output characteristic andenhancing a sound having the low-pitched sound band to the high-pitchedsound band.

As a size of the pad parts 911 and 921, a size of the second pad parts811 and 821, and a size of the third pad parts 913 and 923 increase, itmay be easier to control the peak or the dip phenomenon caused by thestanding wave. For example, if a width of the pad part 911 and a widthof the second pad part 811 are less than 10 mm, it may be difficult tocontrol the peak or the dip phenomenon caused by the standing wave.Therefore, the width of the pad part 911 and the width of the second padpart 811 may each be 10 mm or more. The size of the third pad part 913may be equal to that of the pad part 911, but embodiments are notlimited thereto. For example, a width of the third pad part 913 may be10 mm or more, and a length of the third pad part 913 may be 50 mm orless. However, embodiments are not limited thereto. A width of the firstpartition 1700, the second partition 1700′, and the third partition1700″ may be 10 mm or more, but is not limited thereto. The size of thepad part 911, the size of the second pad part 811, and the size of thethird pad part 913 may be similarly respectively applied to the pad part921, the second pad part 821, and the third pad part 923 in the firstregion L.

The size of the pad parts 911 and 921 may be greater than or equal tothat of the second pad parts 811 and 821, but embodiments are notlimited thereto. A length of the pad part 911 may be equal to or longerthan that of the second pad part 811. For example, the length of the padpart 911 may be 50 mm or less, and a length of the second pad part 811may be 30 mm or less. However, embodiments are not limited thereto. Thelength of the pad part 911 and the length of the second pad part 811 maybe similarly respectively applied to the pad part 921 and the second padpart 821 in the first region L. A size of the first member 832 and asize of the second member 831 may be less than or equal to that of thesecond pad parts 811 and 821, but embodiments are not limited thereto.

A shape of the pad parts 911 and 921, a shape of the second pad parts811 and 821, a shape of the third pad parts 913 and 923, a shape of thefirst member 832, and a shape of the second member 831 may be atetragonal (e.g., rectangular or square) shape or a rounded-endtetragonal (e.g., rectangular or square) shape. However, the shape ofthe pad parts 911 and 921, the shape of the second pad parts 811 and821, the shape of the third pad parts 913 and 923, the shape of thefirst member 832, and the shape of the second member 831 may be providedas various shapes, such as a circular shape. Embodiments are not limitedto these examples.

A partition may be configured based on a shape of a display panel, andone or more pad parts may be provided on at least one side of thepartition to reduce the peak or the dip phenomenon caused by thestanding wave, thereby decreasing the wave phenomenon and enhancing asound output characteristic. The partition and the pad parts may beformed of different materials. Thus, the occurrence of an abnormal soundmay be reduced or prevented, thereby enhancing a sound outputcharacteristic. A pad part, a third pad part, a second partition, and athird partition disposed in a first direction of the display panel or asupporting member may be formed of materials that differ from that of asecond pad part disposed in a second direction of the display panel,thereby providing a display apparatus that may reduce the wavephenomenon, and may output a more enhanced sound having the low-pitchedsound band to the high-pitched sound band. The pad part may be providedwhere the wave phenomenon may occur, and may be formed of a softmaterial, thereby providing a display apparatus that may decrease thepeak or the dip phenomenon caused by the standing wave, may reduce thewave phenomenon, and may output a more enhanced sound having thelow-pitched sound band to the high-pitched sound band.

FIGS. 16A to 16C illustrate examples of a sound generation device and apartition, in a display apparatus according to an embodiment of thepresent disclosure.

In FIGS. 16A to 16C, duplicate descriptions to those given above withreference to the examples of FIGS. 13A to 13G are omitted or will bebriefly provided. For example, descriptions of a sound generationdevice, a pad part, a second pad part, and a third pad part are omittedor will be briefly provided. Also, a partition and a pad part will bedescribed with reference to FIG. 16A by way of example, and thedescriptions of the partition and the pad part may be similarly appliedto the examples of FIGS. 16B and 16C.

With reference to FIGS. 16A to 16C, a first partition 1700 may bedisposed between a display panel and a supporting member 300. Forexample, the first partition 1700 may be between a rear surface of thedisplay panel and a front surface of the supporting member 300. Thefirst partition 1700 may be in a periphery of the supporting member 300.The first partition 1700 may be in a periphery of a rear surface of thesupporting member 300. For example, the first partition 1700 may be inthe periphery of the supporting member 300 or a periphery of the frontsurface of the supporting member 300. The first partition 1700 may be ina periphery of the display panel. For example, the first partition 1700may be in a periphery of a rear surface of the display panel. The firstpartition 1700 may be a whole or entire region of the rear surface ofthe display panel or the supporting member 300. The first partition 1700may be a whole or entire region of four outer sides of the supportingmember or the rear surface of the display panel.

The first partition 1700 may be disposed along a shape, or may be basedon a shape, of the display panel. For example, the first partition 1700may have a tetragonal (e.g., rectangle or square) shape, but embodimentsare not limited thereto. For example, a shape of the first partition1700 may be modified based on a shape of the display panel. If thedisplay panel is a curved display panel having a curved shape or curveshape, or the like, the first partition 1700 may have a correspondinglycurved shape or curve shape. Accordingly, the first partition 1700 maybe disposed along a shape, or may be based on a shape, of the displaypanel, thereby reducing or preventing the wave phenomenon.

With reference to FIG. 16A, at least two partitions, for example, asecond partition 1700′ and a third partition 1700″, may be disposedbetween a first sound generation device 1800 and a second soundgeneration device 1800′. For example, the second partition 1700′ may bebetween a first region L and a third region C, and the third partition1700″ may be between a second region R and the third region C.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be disposed between the display panel and thesupporting member. For example, the first partition 1700, the secondpartition 1700′, and the third partition 1700″ may be between the rearsurface of the display panel and the front surface of the supportingmember 300. The first partition 1700, the second partition 1700′, andthe third partition 1700″ may be on the supporting member 300. The firstpartition 1700, the second partition 1700′, and the third partition1700″ may be on the front surface of the supporting member 300.

The first partition 1700, the second partition 1700′, and the thirdpartition 1700″ may be disposed close to the periphery of the rearsurface of the display panel or the periphery of the front surface ofthe supporting member 300, thereby reducing the wave phenomenon seen ona screen of the display panel. The first partition 1700 may beconfigured based on the shape of the display panel 100. Thus,workability may be improved when attaching the display panel 100 to thesupporting member 300 that supports the rear surface of the displaypanel 100.

Pad parts 911 and 921 may be disposed in a first direction of thedisplay panel 100 or the supporting member 300. The first direction maybe a widthwise (or horizontal) direction of the display panel 100 or thesupporting member 300. A second direction may be a directionperpendicular to the first direction, and may be a lengthwise (orvertical) direction of the display panel 100 or the supporting member300.

Second pad parts 811 and 821 may be further provided on a second side ofthe first partition 1700. One or more second pad parts 811 and 821 maybe on one or more sides of the first partition 1700. The second padparts 811 and 821 may be in at least one of the first region L and thesecond region R.

One or more pad parts may face or may be disposed toward one or moresound generation devices. For example, third pad parts 913 and 923 maybe further provided on a side facing a first side of the first partition1700. The third pad part 923 may be on the side facing the first side ofthe first partition 1700 in the first region L, and the third pad part913 may be on the side facing the first side of the first partition 1700in the second region R. The third pad part 913 may face the pad part911, and the third pad part 923 may face the pad part 921. The third padparts 913 and 923 may be provided as one or as a plurality.

One or more fourth pad parts 813 and 823 may be further provided on aside facing the second side of the first partition 1700. For example,the fourth pad part 823 may be on a side facing the second side of thefirst partition 1700 in the first region L, and the fourth pad part 813may be on a side facing the second side of the first partition 1700 inthe second region R. The fourth pad part 823 may face the second padpart 821, and the fourth pad part 813 may face the second pad part 811.The fourth pad parts 813 and 823 may be provided as one or as aplurality. The pad parts 911 and 921, the second pad parts 811 and 821,the third pad parts 913 and 923, and the fourth pad parts 813 and 823may trap a reflected wave from the first and second sound generationdevices 1800 and 1800′. Thus, the pad parts 911 and 921, the second padparts 811 and 821, the third pad parts 913 and 923, and the fourth padparts 813 and 823 may decrease the peak or the dip phenomenon caused bythe standing wave, thereby enhancing a sound output characteristic.Also, the second pad parts 811 and 821 and the fourth pad parts 813 and823 may further reduce the peak or the dip phenomenon caused by thestanding wave that may occur due to interference of a reflected wave anda progressive wave, and may avoid or prevent sound quality from beingreduced by the standing wave or the reflected wave.

One or more first members 832 may be further provided on one or moresides of the second partition 1700′. One or more second members 831 maybe further provided on one or more sides of the third partition 1700″.The first member 832 and the second member 831 may be between the secondpad parts 811 and 821, or may be between the fourth pads 813 and 823,and may be in the third region C. The first member 832 and the secondmember 831 may reduce or prevent vibrations generated by the first andsecond sound generation devices 1800 and 1800′ from passing over,through, or across the second partition 1700′ and the third partition1700″. Therefore, the first member 832 and the second member 831 maycontrol a wave or a vibration, which may be transferred or spread to thefirst region L and/or the right region R, between the second partition1700′ and the third partition 1700″. Accordingly, a display apparatushaving a more enhanced sound output characteristic may be provided.

The first member 832 and the second member 831 may respectively besymmetrically or asymmetrically provided with respect to the first soundgeneration device 1800. For example, the first member 832 may be on,over, or under the same line as the second member 831 with respect tothe first sound generation device 1800, e.g., in a vertical direction.When the first member 832 and the second member 831 are provided as onebody, the first member 832 and the second member 831 may besymmetrically provided with respect to the first sound generation device1800. For example, the first member 832 and the second member 831 may beprovided on the same line with respect to the first sound generationdevice 1800. When the first member 832 and the second member 831 areprovided as one body, the first member 832 and the second member 831 maybe asymmetrically provided with respect to the first sound generationdevice 1800. For example, with respect to the first sound generationdevice 1800, the first member 832 may be on the same line as the firstsound generation device 1800, and the second member 831 may be under thefirst sound generation device 1800, e.g., in a vertical direction.

The first partition 1700 may be formed of a material that differs fromthose of the second partition 1700′ and the third partition 1700″. Thefirst partition 1700 may be formed of a double-sided tape, butembodiments are not limited thereto. For example, the first partition1700 may be formed of a material having an elasticity that may enablecompression to be formed to some extent. For example, the firstpartition 1700 may be formed of polyurethane, polyolefin, polyethylene,and/or the like, but embodiments are not limited thereto.

The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821.For example, the second pad parts 811 and 821 may be formed of asingle-sided tape. The single-sided tape may include a foam materialthat may absorb an impact when contacting the display panel. Thesingle-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto.

The pad parts 911 and 921, the second partition 1700′, and the thirdpartition 1700″ may be formed of materials that differ from those of thesecond pad parts 811 and 821. For example, the second pad parts 811 and821 may be formed of a single-sided tape. The single-sided tape mayinclude a foam material that may absorb an impact when contacting thedisplay panel. The single-sided tape may be formed of, for example,polyurethane, polyolefin, polyethylene, and/or the like, but embodimentsare not limited thereto.

The pad parts 911 and 921, the second partition 1700′, and the thirdpartition 1700″ may be formed of materials that differ from those of thesecond pad parts 811 and 821 or the fourth pad parts 813 and 823. Forexample, the second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923 may be formed ofa soft foam tape. The soft foam tape may be a sponge type, butembodiments are not limited thereto. For example, the soft foam tape maybe an urethane foam or a polyurethane foam, but embodiments are notlimited thereto. Also, the second partition 1700′ and the thirdpartition 1700″ may be formed of a soft material. Thus, in comparisonwith a case in which the soft material is not applied, an area capableof being used as a partition is more enlarged, thereby further enhancinga sound having the low sound band to the high sound band.

The second partition 1700′, the third partition 1700″, the pad parts 911and 921, and the third pad parts 913 and 923 may be formed of materialsthat differ from those of the second pad parts 811 and 821 or the fourthpad parts 813 and 823. For example, the second partition 1700′ and thethird partition 1700″ may be formed of materials that are softer thanthose of the second pad parts 811 and 821 or the fourth pad parts 813and 823. The second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923 may be formed ofmaterials that are softer than those of the second pad parts 811 and 821or the fourth pad parts 813 and 823.

The second partition 1700′, the third partition 1700″, the pad parts 911and 921, and the third pad parts 913 and 923 may be formed of materialsthat differ from those of the first and second members 832 and 831. Forexample, the second partition 1700′ and the third partition 1700″ may beformed of materials that are softer than those of the first and secondmembers 832 and 831. The second partition 1700′, the third partition1700″, the pad parts 911 and 921, and the third pad parts 913 and 923may be formed of materials that are softer than those of the second padparts 811 and 821, the fourth pad parts 813 and 823, and the first andsecond members 832 and 831.

The second partition 1700′, the third partition 1700″, and the pad parts911 and 921 may be formed of the same material. The second partition1700′, the third partition 1700″, the pad parts 911 and 921, and thethird pad parts 913 and 923 may be formed of the same material. Forexample, the second partition 1700′, the third partition 1700″, the padparts 911 and 921, and the third pad parts 913 and 923 may be formed ofa soft foam tape. The soft foam tape may be a sponge type, butembodiments are not limited thereto. For example, the soft foam tape maybe an urethane foam or a polyurethane foam, but embodiments are notlimited thereto.

The second pad parts 811 and 821 and the fourth pad parts 813 and 823may be formed of the same material. For example, the second pad parts811 and 821 and the fourth pad parts 813 and 823 may be formed of asingle-sided tape. The single-sided tape may include a foam materialthat may absorb an impact when contacting the display panel. Thesingle-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto.

The second pad parts 811 and 821, the fourth pad parts 813 and 823, andthe first and second members 832 and 831 may be formed of the samematerial. For example, the second pad parts 811 and 821, the fourth padparts 813 and 823, and the first and second members 832 and 831 may beformed of a single-sided tape. The single-sided tape may include a foammaterial that may absorb an impact when contacting the display panel.The single-sided tape may be formed of, for example, polyurethane,polyolefin, polyethylene, and/or the like, but embodiments are notlimited thereto.

Therefore, when the pad parts, the third pad parts, the secondpartition, and the third partition disposed in a first direction of thedisplay panel or the supporting member are formed of soft materials, thewave phenomenon may be reduced or prevented. The second partition andthe third partition may be formed of soft materials, thereby providing adisplay apparatus which may output an enhanced sound having thelow-pitched sound band to the high-pitched sound band. One or more padparts may be formed of soft materials, and may be disposed on and/orunder a line of the sound generation device (e.g., in a verticaldirection) where the wave phenomenon may occur. Thus, the wavephenomenon may be reduced or prevented. The one or more pad parts mayinclude ones of the pad parts 911 and 921 and the third pad parts 913and 923.

The first partition 1700 may be formed of a material that differs fromthose of the second partition 1700′ and the third partition 1700″. Thefirst partition 1700 may be formed of a material that differs from thoseof the pad parts 911 and 921 and the third pad parts 913 and 923. Thefirst partition 1700 may be formed of a material that differs from thoseof the second pad parts 811 and 821. The first partition 1700 may beformed of a material that differs from those of the second pad parts 811and 821 and the fourth pad parts 813 and 823. The first partition 1700may be formed of a material that differs from those of the second padparts 811 and 821 and the first and second members 832 and 831. Thefirst partition 1700 may be formed of a material that differs from thoseof the second pad parts 811 and 821, the fourth pad parts 813 and 823,and the first and second members 832 and 831.

The second partition 1700′ and the third partition 1700″ may be formedof materials that differ from those of the second pad parts 811 and 821and the fourth pad parts 813 and 823. The second partition 1700′ and thethird partition 1700″ may be formed of materials that differ from thoseof the second pad parts 811 and 821. The second partition 1700′ and thethird partition 1700″ may be formed of materials that differ from thoseof the second pad parts 811 and 821 and the first and second members 832and 831. The second partition 1700′ and the third partition 1700″ may beformed of materials that differ from those of the second pad parts 811and 821, the fourth pad parts 813 and 823, and the first and secondmembers 832 and 831.

The pad parts 911 and 921 and the third pad parts 913 and 923 may beformed of materials that differ from those of the second pad parts 811and 821. The pad parts 911 and 921 and the third pad parts 913 and 923may be formed of materials that differ from those of the second padparts 811 and 821 and the fourth pad parts 813 and 823. The pad parts911 and 921 and the third pad parts 913 and 923 may be formed ofmaterials that differ from those of the second pad parts 811 and 821 andthe first and second members 832 and 831. The pad parts 911 and 921 andthe third pad parts 913 and 923 may be formed of materials that differfrom those of the second pad parts 811 and 821, the fourth pad parts 813and 823, and the first and second members 832 and 831. The secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,and the third pad parts 913 and 923 may be formed of materials thatdiffer from those of the second pad parts 811 and 821. The secondpartition 1700′, the third partition 1700″, the pad parts 911 and 921,and the third pad parts 913 and 923 may be formed of materials thatdiffer from those of the second pad parts 811 and 821 and the fourth padparts 813 and 823. The second partition 1700′, the third partition1700″, the pad parts 911 and 921, and the third pad parts 913 and 923may be formed of materials that differ from those of the second padparts 811 and 821 and the first and second members 832 and 831. Thesecond partition 1700′, the third partition 1700″, the pad parts 911 and921, and the third pad parts 913 and 923 may be formed of materials thatdiffer from those of the second pad parts 811 and 821, the fourth padparts 813 and 823, and the first and second members 832 and 831.

The first partition 1700, the second pad parts 811 and 821, the fourthpad parts 813 and 823, and the first and second members 832 and 831 maybe formed of materials that differ from those of the second partition1700′, the third partition 1700″, the pad parts 911 and 921, and thethird pad parts 913 and 923. Alternatively, the first partition 1700,and the second pad parts 811 and 821, the fourth pad parts 813 and 823,the first and second members 832 and 831, the second partition 1700′,the third partition 1700″, the pad parts 911 and 921, and the third padparts 913 and 923 may be formed of different materials.

For example, the first partition 1700, the second pad parts 811 and 821,the fourth pad parts 813 and 823, and the first and second members 832and 831 may be formed of materials having an adhesive force that differsfrom those of materials of the second partition 1700′, the thirdpartition 1700″, the pad parts 911 and 921, and the third pad parts 913and 923. Alternatively, the first partition 1700, and the second padparts 811 and 821, the fourth pad parts 813 and 823 and the first andsecond members 832 and 831, and the second partition 1700′, the thirdpartition 1700″, the pad parts 911 and 921 and the third pad parts 913and 923 may be formed of materials of a different adhesive force. Whenthe second partition 1700′, the third partition 1700″, the pad parts 911and 921, the third pad parts 913 and 923, the second pad parts 811 and821, the fourth pad parts 813 and 823, and the first and second members832 and 831 are formed of materials that differ from that of the firstpartition 1700, the wave phenomenon may be reduced or prevented, and thepeak or the dip phenomenon caused by the standing wave may be reduced,thereby enhancing a sound output characteristic and enhancing a soundhaving the low-pitched sound band to the high-pitched sound band.

As a size of the pad parts 911 and 921, a size of the second pad parts811 and 821, a size of the third pad parts 913 and 923, and a size ofthe fourth pad parts 813 and 823 increase, it may be easier to controlthe peak or the dip phenomenon caused by the standing wave. For example,if a width of the pad part 911 and a width of the second pad part 811are less than 10 mm, it may be difficult to control the peak or the dipphenomenon caused by the standing wave. Therefore, the width of the padpart 911 and the width of the second pad part 811 may each be 10 mm ormore. The size of the third pad parts 913 and 923 may be equal to thatof the pad parts 911 and 921, but embodiments are not limited thereto.For example, a width of the third pad part 913 may be 10 mm or more, anda length of the third pad part 913 may be 50 mm or less. However,embodiments are not limited thereto. Also, the size of the fourth padpart 813 may be equal to that of the second pad part 811, butembodiments are not limited thereto. For example, a width of the fourthpad part 813 may be 10 mm or more, and a length of the fourth pad part813 may be 30 mm or less. However, the embodiments are not limitedthereto. A width of the first partition 1700, the second partition1700′, and the third partition 1700″ may be 10 mm or more, butembodiments are not limited thereto. The size of the pad part 911, thesize of the second pad part 811, the size of the third pad part 913, andthe size of the fourth pad part 813 may be similarly respectivelyapplied to the pad part 921, the second pad part 821, the third pad part923, and the fourth pad part 823 in the first region L.

The size of the pad parts 911 and 921 may be greater than or equal tothat of the second pad parts 811 and 821 or that of the fourth pad parts813 and 823, but embodiments are not limited thereto. A length of thepad part 911 may be equal to or longer than that of the second pad part811. For example, the length of the pad part 911 may be 50 mm or less,and a length of the second pad part 811 may be 30 mm or less. However,embodiments are not limited thereto. The length of the pad part 911 andthe length of the second pad part 811 may be similarly respectivelyapplied to the pad part 921 and the second pad part 821 in the firstregion L. The size of the fourth pad parts 813 and 823 may be equal tothat of the second pad parts 811 and 821, but embodiments are notlimited thereto. For example, a length of the fourth pad part 813 may be30 mm or less, and a width of the fourth pad part 813 may be 10 mm ormore. However, embodiments are not limited thereto.

A shape of the pad parts 911 and 921, a shape of the second pad parts811 and 821, a shape of the third pad parts 913 and 923, a shape of thefourth pad parts 813 and 823, a shape of the first member 832, and ashape of the second member 831 may be a tetragonal (e.g., rectangular orsquare) shape or a rounded-end tetragonal (e.g., rectangular or square)shape. However, the shape of the pad parts 911 and 921, the shape of thesecond pad parts 811 and 821, the shape of the third pad parts 913 and923, the shape of the fourth pad parts 813 and 823, the shape of thefirst member 832, and the shape of the second member 831 may be providedas various shapes such as a circular shape. Embodiments are not limitedto these examples.

A partition may be configured based on a shape of a display panel, andone or more pad parts may be provided on at least one side of thepartition to reduce the peak or the dip phenomenon caused by thestanding wave, thereby decreasing the wave phenomenon and enhancing asound output characteristic. The partition and the pad parts may beformed of different materials. Thus, the occurrence of an abnormal soundmay be reduced or prevented, thereby enhancing a sound outputcharacteristic. A pad part, a third pad part, a second partition, and athird partition disposed in a first direction of the display panel or asupporting member may be formed of materials that differ from that of asecond pad part and a fourth pad part disposed in a second direction ofthe display panel, thereby providing a display apparatus that may reducethe wave phenomenon, and may output a more enhanced sound having thelow-pitched sound band to the high-pitched sound band. The pad part maybe provided where the wave phenomenon may occur, and may be formed of asoft material, thereby providing a display apparatus that may decreasethe peak or the dip phenomenon caused by the standing wave, may reducethe wave phenomenon, and may output a more enhanced sound having thelow-pitched sound band to the high-pitched sound band.

A vibration characteristic has been measured with a laser Dopplerdevice. A result of the measurement will be described below withreference to FIG. 17.

FIG. 17 illustrates a vibration characteristic of a sound generationdevice according to an embodiment of the present disclosure.

FIG. 17 shows an experimental result obtained by measuring a vibrationcharacteristic with the laser Doppler device. The laser Doppler devicemay irradiate laser light onto a sound vibration surface of a displaypanel and may check (or test) a scattered pattern of the laser light tocheck (or determine) a shape in which a vibration spreads, and thechecked shape may be displayed as an image.

A microphone, through which a sound may be input, is disposed at acenter of the display panel, and measurement has been performed in astate in which a sound travels to the center of the display panel. Asillustrated in FIG. 17, measurement has been performed under a conditionin which a partition and a pad part are provided in a supporting member300. Moreover, a result of the measurement may be the similar to aresult of measurement that is performed under a condition in which thepartition and a pad part are provided on a rear surface of the displaypanel. Also, measurement has been performed under a condition in which apair of sound generation devices is provided, but a result of themeasurement may be the same as a result of measurement performed under acondition in which a circular or oval sound generation device isprovided.

In FIG. 17, a portion shown as dark or black represents a portion wherea vibration is large, and a blurry or grey portion represents a portionwhere a vibration is small. Lighter grey indicates less vibration. Forexample, when a vibration occurs in a first sound generation device 1800and a second sound generation device 1800′, a portion shown as dark orblack forms a concentric shape, e.g., a circle, and the vibrationspreads to a periphery and flows out to the outside. When a largervibration subsequently occurs, a color of a slightly blurry (e.g.,lighter grey) portion and a blurry (e.g., darker grey) portion ischanged to dark or black. Also, as time elapses, a slightly blurry(e.g., lighter grey) portion is changed to a blurry (e.g., darker grey)portion where a vibration has been increased. In other words, when thevibration is continuously applied over a long time, the vibrationincreases throughout the first region L and second region R respectivelysurrounded by the first partition 1700 and the second partition 1700′.

Based on the experimental result obtained by measuring the vibrationcharacteristic with the laser Doppler device, it can be seen that avibration occurs in the first sound generation device 1800 provided in afirst region L and the second sound generation device 1800′ provided ina second region R. For example, it can be seen that a uniform vibrationoccurs in the first sound generation device 1800 provided in the firstregion L and the second sound generation device 1800′ provided in thesecond region R. However, no vibration was measured in the third(center) area C. A sound output characteristic according to anembodiment of the present disclosure has been measured, and a result ofthe measurement will be described below with reference to FIG. 18.

FIG. 18 illustrates a sound output characteristic of a sound generationdevice according to an embodiment of the present disclosure.

In FIG. 18, a dotted line shows a sound output characteristic of thesound generation device of the example of FIG. 9B, and a solid lineshows a sound output characteristic of the sound generation device ofthe example of FIG. 13A. The abscissa (or horizontal) axis represents afrequency (Hz), and the ordinate (or vertical) axis represents a soundpressure level (SPL) in decibels (dB).

In FIG. 18, experimental measurements were performed under a conditionin which a partition and a pad part are provided on a supporting member,and a result of the measurement may be substantially similar to a resultof measurement performed under a condition in which the partition and apad part are provided on a rear surface of a display panel. Measurementhas been performed under a condition in which a pair of sound generationdevices is provided, but a result of the measurement may besubstantially similar to a result of measurement performed under acondition in which a circular or oval sound generation device isprovided.

With reference to FIG. 18, in an example (shown by a dotted line) inwhich the sound generation device illustrated in FIG. 9B is applied, itcan be seen that in a frequency of about 400 Hz to 1 kHz (referred to bythe circle “C”), because the occurrence of the specific frequency isreduced, a dip where a sound pressure level is low is shown as beingsevere. It can be seen that in the particular frequency shown in “C”, apeak where a sound pressure level bounces is shown. When the soundgeneration device of the FIG. 13A example (shown by a solid line) isapplied, it can be seen that the dip and the peak at C are reduced.

Evenness is a difference between a highest point and a lowest point of asound pressure level in a frequency characteristic. As the difference isreduced, evenness of a sound improves, and a sound characteristic can beimproved. As the number of peaks and dips causing the difference isreduced, the sound characteristic can be improved. In the displayapparatus according to an embodiment of the present disclosure, it canbe seen that a sound having the low sound band at “C” is improved.Therefore, in an embodiment of the present disclosure, when the pad partis provided in the partition, the number of the dips or peaks may bereduced. Thus, an evenness of a sound may be improved.

In the display apparatus of the present disclosure, it can be seen thata sharpness of the peak may be reduced in a frequency of about 1.5 kHz,e.g., a region (shown in a circle “D”) corresponding to the middle soundband. In the display apparatus according to an embodiment of the presentdisclosure, it can be seen that, when a second partition and a thirdpartition are formed of a soft foam material, an area of a partition mayincrease. Thus, a sound having the low-pitched sound band to thehigh-pitched sound band may be enhanced.

In the display apparatus according to an embodiment of the presentdisclosure, it can be seen that a sound having the middle-high-pitchedsound band may be enhanced in a frequency of about 10 kHz or less, e.g.,a region (shown in a circle “E”) corresponding to themiddle-high-pitched sound band. Therefore, in the display apparatusaccording to an embodiment of the present disclosure, the dip or thepeak may be reduced. Thus, an even sound characteristic may be realized.Accordingly, a display apparatus having a more enhanced sound outputcharacteristic corresponding to the low-pitched sound band to thehigh-pitched sound band may be provided.

The sound generation device according to an embodiment of the presentdisclosure may be provided as a sound generation device provided in adisplay apparatus. The display apparatus according to an embodiment ofthe present disclosure may be applied, for example, to mobileapparatuses, video phones, smart watches, watch phones, wearableapparatuses, foldable devices, rollable apparatuses, bendableapparatuses, flexible apparatuses, curved apparatuses, portablemultimedia players (PMPs), personal digital assistants (PDAs),electronic organizers, desktop personal computers (PCs), laptop PCs,netbook computers, workstations, navigation apparatuses, automotivenavigation apparatuses, automotive display apparatuses, televisions(TVs), wall paper display apparatuses, signage apparatuses, gamemachines, notebook computers, monitors, cameras, camcorders, homeappliances, etc. The sound generation device according to an embodimentof the present disclosure may be applied to organic light-emittinglighting apparatuses or inorganic light-emitting lighting apparatuses.When the sound generation device is applied to a lighting apparatus, thesound generation device may act as both lighting and a speaker.

A display apparatus according to an embodiment of the present disclosurewill be described below. A display apparatus according to an embodimentof the present disclosure may include a display panel configured todisplay an image, one or more sound generation devices configured tovibrate the display panel, a supporting member configured to support thedisplay panel, a partition disposed between the display panel and thesupporting member, one or more pad parts disposed on a first side of thepartition, and one or more second pad parts disposed on a second sideperpendicular to the first side.

According to some embodiments of the present disclosure, the one or morepad parts and the one or more second pad parts may include differentmaterials. According to some embodiments of the present disclosure, thepartition, the one or more pad parts, and the one or more second padparts may include different materials.

According to some embodiments of the present disclosure, the one or morepad parts and the one or more second pad parts may be disposed to facethe one or more sound generation devices. According to some embodimentsof the present disclosure, the one or more pad parts may be disposed toface the one or more sound generation devices. According to someembodiments of the present disclosure, the one or more pad parts and theone or more second pad parts may be disposed to face the one or moresound generation devices.

According to some embodiments of the present disclosure, the partitionmay be disposed along a shape of the display panel. According to someembodiments of the present disclosure, the partition may be divisionallydisposed in a first direction of the display panel or the supportingmember or a second direction perpendicular to the first direction.According to some embodiments of the present disclosure, the one or moresound generation devices may have one of a circular shape and an ovalshape, or a pair of sound generation devices.

A display apparatus according to an embodiment of the present disclosureincludes a display panel configured to display an image, the displaypanel including a first region, a second region, and a third region, oneor more sound generation devices in at least one of the first region,the second region, and the third region, a supporting member supportingthe display panel, a first partition between the display panel and thesupporting member, one or more pad parts in a first direction of thedisplay panel or the supporting member, and one or more second pad partsdisposed in a second direction perpendicular to the first direction.

According to some embodiments of the present disclosure, the firstpartition, the one or more pad parts, and the one or more second padparts may include different materials. According to some embodiments ofthe present disclosure, the display apparatus may further include asecond partition disposed between the first region and the third regionin the first direction, wherein the second partition and the one or morepad parts may include the same material. According to some embodimentsof the present disclosure, the first partition and the second partitionmay include different materials.

According to some embodiments of the present disclosure, the firstpartition may be disposed along a shape of the display panel. Accordingto some embodiments of the present disclosure, the first partition maybe divisionally disposed in the first direction or the second direction.

According to some embodiments of the present disclosure, the one or morepad parts may be disposed to face the one or more sound generationdevices. According to some embodiments of the present disclosure, theone or more pad parts may be respectively disposed in the first regionand the second region. According to some embodiments of the presentdisclosure, the display apparatus may further include one or more thirdpad parts disposed to face the one or more pad parts. According to someembodiments of the present disclosure, the one or more third pad partsmay include the same material as a material of the one or more padparts. According to some embodiments of the present disclosure, thedisplay apparatus may further include one or more third pad partsdisposed to face the one or more pad parts and one or more fourth padparts disposed to face the one or more second pad parts. According tosome embodiments of the present disclosure, the one or more third padparts may include the same material as a material of the one or more padparts, and the one or more fourth pad parts may include the samematerial as a material of the one or more second pad parts.

According to some embodiments of the present disclosure, the displayapparatus may further include a second partition between the firstregion and the third region, and a third partition between the secondregion and the third region. The first region may be a left region ofthe display panel, the second region may be a right region of thedisplay panel, and the third region may be a center region of thedisplay panel. According to some embodiments of the present disclosure,the second partition and the third partition may include the samematerial. According to some embodiments of the present disclosure, thefirst partition may include a material that differs from materials ofthe second partition and the third partition. According to someembodiments of the present disclosure, the second partition and thethird partition may include the same material as a material of the oneor more pad parts. According to some embodiments of the presentdisclosure, the display apparatus may further include one or more firstmembers disposed on at least one side of the second partition and one ormore second members disposed on at least one side of the thirdpartition. According to some embodiments of the present disclosure, theone or more first members and the one or more second members may includethe same material as a material of the one or more second pad parts.

According to some embodiments of the present disclosure, the firstregion may be a left region of the display panel, the second region maybe a right region of the display panel, the third region may be a centerregion of the display panel, and each of an area of the first region andan area of the second region may be greater than an area of the thirdregion. According to some embodiments of the present disclosure, the oneor more sound generation devices may be respectively disposed in thefirst region and the second region. According to some embodiments of thepresent disclosure, the one or more sound generation devices may vibrate(e.g., directly vibrate) the display panel to generate a sound.According to some embodiments of the present disclosure, the one or moresound generation devices may have one or more of: a circular shape, anoval shape, and a pair of sound generation devices.

As described above, when the display apparatus according to anembodiment of the present disclosure includes the sound generationdevice that may vibrate the display panel to generate sound, the soundof the display apparatus may be output to a region in front of thedisplay panel. Accordingly, an immersion experience of a viewer, who iswatching an image displayed by the display apparatus, may be enhanced.

When the display apparatus according to an embodiment of the presentdisclosure includes the sound generation device that may vibrate thedisplay panel to generate sound, a speaker may not be additionallyprovided. Thus, a degree of freedom in design and spatial disposition ofa set device or a set apparatus may be enhanced.

In the display apparatus according to an embodiment of the presentdisclosure, when the partition is configured based on a shape of thedisplay panel, a wave phenomenon of the display panel may be reduced.When the display apparatus according to an embodiment of the presentdisclosure includes one or more pad parts on at least one side of thepartition, sound quality may be improved or prevented from being reducedby a standing wave or a reflected wave that may occur in the displaypanel, thereby providing a display apparatus having an enhanced soundoutput characteristics.

When the display apparatus according to an embodiment of the presentdisclosure includes the partition and the one or more pad parts on theat least one side of the partition, sound quality may be improved orprevented from being reduced by the standing wave or the reflected wavethat may occur in the display panel, thereby providing a displayapparatus having an enhanced sound output characteristic. When thedisplay apparatus according to an embodiment of the present disclosureincludes the partition and the one or more pad parts on the at least oneside of the partition, the peak and the dip phenomenon caused by thestanding wave may be reduced, thereby providing a display apparatushaving an enhanced sound output characteristic and a thin thickness.

In the display apparatus according to an embodiment of the presentdisclosure, when the partition is configured based a shape of thedisplay panel and the one or more pad parts are on the at least one sideof the partition, the wave phenomenon, which is a defect that may occurin the display panel, may be reduced, and the peak and the dipphenomenon caused by the standing wave may be reduced. Accordingly, adisplay apparatus having an enhanced sound output characteristic may beimplemented.

In the display apparatus according to an embodiment of the presentdisclosure, the partition may be configured based a shape of the displaypanel, the one or more pad parts may be provided on the at least oneside of the partition, and the one or more members may be provided on atleast one side of the partition. Accordingly, a display apparatus havingan enhanced sound output characteristic and reducing the wave phenomenonof the display panel may be implemented.

In the display apparatus according to an embodiment of the presentdisclosure, the partition may be configured based a shape of the displaypanel, the one or more pad parts may be provided on the at least oneside of the partition, and a material of the partition may differ fromthat of the pad parts, thereby reducing the wave phenomenon of thedisplay panel. Accordingly, a display apparatus that enhances a soundhaving the low-pitched sound band to the high-pitched sound band and hasan enhanced sound output characteristic may be implemented.

In the display apparatus according to an embodiment of the presentdisclosure, the partition may be configured based a shape of the displaypanel, the one or more pad parts may be provided on the at least oneside of the partition, one or more second pad parts may be provided onanother one side of the partition, and the pad parts, the second padparts, and the partition may be formed of different materials, therebyreducing the wave phenomenon of the display panel. Accordingly, adisplay apparatus that enhances a sound having the low-pitched soundband to the high-pitched sound band and has an enhanced sound outputcharacteristic may be implemented.

In the display apparatus according to an embodiment of the presentdisclosure, when the partition is provided between one or more soundgeneration devices on the display panel, the partition may separate asound. Thus, a stereo sound may be realized. Accordingly, a displayapparatus having an enhanced sound output characteristic may beimplemented.

A display apparatus according to an embodiment of the present disclosurewill be described below.

According to an embodiment of the present disclosure, a displayapparatus may include: a display panel configured to display an image,one or more sound generation devices configured to vibrate the displaypanel to generate sound, a supporting member configured to support thedisplay panel, a partition between the display panel and the supportingmember, the partition including: a first side in a horizontal direction,and a second side in a vertical direction, one or more first pad partson the first side of the partition, and one or more second pad parts onthe second side of the partition. A first of the one or more first padparts may include a different material from a material of a first of theone or more second pad parts.

For example, in the display apparatus according to an embodiment of thepresent disclosure, a second of the one or more first pad parts mayinclude a different material from a material of the first of the one ormore first pad parts. For example, in the display apparatus according toan embodiment of the present disclosure, the first of the one or moresecond pad parts may include a different material from a material of asecond of the one or more second pad parts. For example, in the displayapparatus according to an embodiment of the present disclosure, thepartition may include a different material from respective materials ofthe first of the one or more first pad parts and the first of the one ormore second pad parts.

For example, in the display apparatus according to an embodiment of thepresent disclosure, the one or more second pad parts may extend towardthe one or more sound generation devices. For example, in the displayapparatus according to an embodiment of the present disclosure, the oneor more first pad parts may extend toward the one or more soundgeneration devices. For example, in the display apparatus according toan embodiment of the present disclosure, the partition may have aperimeter shape corresponding to a perimeter shape of the display panel.

For example, in the display apparatus according to an embodiment of thepresent disclosure, the partition may be configured to divide thedisplay panel and may include portions respectively extending in a firstdirection of the display panel or the supporting member, or in a seconddirection perpendicular to the first direction. For example, in thedisplay apparatus according to an embodiment of the present disclosure,the one or more sound generation devices may include one or more of: acircular shape, an oval shape, and a pair of sound generation devices.

According to an embodiment of the present disclosure, a displayapparatus may include: a display panel configured to display an image,the display panel including: a first region, a second region, and athird region, one or more sound generation devices in at least one of:the first region, the second region, and the third region, a supportingmember supporting the display panel, a first partition between thedisplay panel and the supporting member, one or more first pad partsextending from the first partition in a first direction of the displaypanel or the supporting member, and one or more second pad partsextending from the first partition in a second direction of the displaypanel or the supporting member, the second direction being perpendicularto the first direction. A first of the one or more first pad parts mayinclude a different material from a material of a first of the one ormore second pad parts.

For example, in the display apparatus according to an embodiment of thepresent disclosure, the first partition may include a different materialfrom respective materials of the first of the one or more first padparts and the first of the one or more second pad parts. For example,the display apparatus according to an embodiment of the presentdisclosure may further include a second partition between the firstresgion and the third region in the first direction, and the secondpartition and the one or more first pad parts may include a samematerial. For example, in the display apparatus according to anembodiment of the present disclosure, the first partition and the secondpartition may respectively include different materials.

For example, in the display apparatus according to an embodiment of thepresent disclosure, the first partition may have a perimeter shapecorresponding to a perimeter shape of the display panel. For example, inthe display apparatus according to an embodiment of the presentdisclosure, the first partition may be configured to divide the displaypanel or the supporting member and may include portions respectivelyextending in the first direction, or in the second direction.

For example, in the display apparatus according to an embodiment of thepresent disclosure, the one or more first pad parts extend toward theone or more sound generation devices. For example, in the displayapparatus according to an embodiment of the present disclosure, thefirst of the one or more first pad parts may be in the first region, anda second of the one or more first pad parts may be in the second region.

For example, the display apparatus according to an embodiment of thepresent disclosure may further include one or more third pad partsextending toward the one or more first pad parts. For example, in thedisplay apparatus according to an embodiment of the present disclosure,a first of the one or more third pad parts may include a same materialas a material of the first of the one or more first pad parts.

For example, the display apparatus according to an embodiment of thepresent disclosure may further include one or more third pad partsextending toward the one or more first pad parts, and one or more fourthpad parts extending toward the one or more second pad parts. Forexample, in the display apparatus according to an embodiment of thepresent disclosure, a first of the one or more third pad parts mayinclude a same material as a material of the first of the one or morefirst pad parts, and a first of the one or more fourth pad parts mayinclude a same material as a material of the first of the one or moresecond pad parts.

For example, the display apparatus according to an embodiment of thepresent disclosure may further include a second partition between thefirst region and the third region, and a third partition between thesecond region and the third region, and the first region may be a leftregion of the display panel, the second region may be a right region ofthe display panel, and the third region may be a center region of thedisplay panel.

For example, in the display apparatus according to an embodiment of thepresent disclosure, the second partition and the third partition mayinclude a same material. For example, in the display apparatus accordingto an embodiment of the present disclosure, the first partition mayinclude a material that differs from respective materials of the secondpartition and the third partition. For example, in the display apparatusaccording to an embodiment of the present disclosure, the secondpartition and the third partition may include a same material as amaterial of the first of the one or more first pad parts.

For example, the display apparatus according to an embodiment of thepresent disclosure may further include one or more first members on atleast one side of the second partition, and one or more second memberson at least one side of the third partition. For example, in the displayapparatus according to an embodiment of the present disclosure, a firstof the one or more first members and a first of the one or more secondmembers may include a same material as a material of the first of theone or more second pad parts.

For example, in the display apparatus according to an embodiment of thepresent disclosure, the first region may be a left region of the displaypanel, the second region may be a right region of the display panel, thethird region may be a center region of the display panel, and each of anarea of the first region and an area of the second region may be greaterthan an area of the third region. For example, in the display apparatusaccording to an embodiment of the present disclosure, a first of the oneor more sound generation devices may be in the first region, and asecond of the one or more sound generation devices may be in the secondregion. For example, in the display apparatus according to an embodimentof the present disclosure, the one or more sound generation devices maybe configured to vibrate the display panel to generate sound.

It will be apparent to those skilled in the art that variousmodifications and variations may be made in the present disclosurewithout departing from the technical idea or scope of the disclosure.Thus, it may be intended that embodiments of the present disclosurecover the modifications and variations of the disclosure provided theycome within the scope of the appended claims and their equivalents.

1-30. (Canceled)
 31. A display apparatus, comprising: a display panelconfigured to display an image; one or more sound generation devicesconfigured to vibrate the display panel to generate sound; a supportingmember configured to support the display panel; a partition between thedisplay panel and the supporting member, the partition comprising: afirst side in a horizontal direction; and a second side in a verticaldirection; one or more first pad parts on the first side of thepartition in an interior region of the partition; and one or more secondpad parts on the second side of the partition in the interior region ofthe partition.
 32. The display apparatus of claim 31, wherein a first ofthe one or more first pad parts comprises a different material from amaterial of a first of the one or more second pad parts.
 33. The displayapparatus of claim 31, wherein a second of the one or more first padparts comprises a different material from a material of the first of theone or more first pad parts.
 34. The display apparatus of claim 31,wherein the first of the one or more second pad parts comprises adifferent material from a material of a second of the one or more secondpad parts.
 35. The display apparatus of claim 31, wherein the partitioncomprises a different material from respective materials of the first ofthe one or more first pad parts and the first of the one or more secondpad parts.
 36. The display apparatus of claim 31, wherein the one ormore second pad parts extend toward the one or more sound generationdevices.
 37. The display apparatus of claim 31, wherein the one or morefirst pad parts extend toward the one or more sound generation devices.38. The display apparatus of claim 31, wherein the partition has aperimeter shape corresponding to a perimeter shape of the display panel.39. The display apparatus of claim 31, wherein the partition isconfigured to divide the display panel and includes portionsrespectively extending: in a first direction of the display panel or thesupporting member; or in a second direction perpendicular to the firstdirection.
 40. The display apparatus of claim 31, wherein the one ormore sound generation devices includes one or more of: a circular shape,an oval shape, and a pair of sound generation devices.
 41. A displayapparatus, comprising: a display panel configured to display an image,the display panel comprising: a first region; a second region; and athird region; one or more sound generation devices in at least one of:the first region, the second region, and the third region; a supportingmember supporting the display panel; a first partition between thedisplay panel and the supporting member; one or more first pad partsextending from the first partition in a first direction of the displaypanel or the supporting member in the at least one of: the first region,the second region, and the third region; and one or more second padparts extending from the first partition in a second direction of thedisplay panel or the supporting member in the at least one of: the firstregion, the second region, and the third region, the second directionbeing perpendicular to the first direction.
 42. The display apparatus ofclaim 41, wherein a first of the one or more first pad parts comprises adifferent material from a material of a first of the one or more secondpad parts.
 43. The display apparatus of claim 41, wherein the firstpartition comprises a different material from respective materials ofthe first of the one or more first pad parts and the first of the one ormore second pad parts.
 44. The display apparatus of claim 41, furthercomprising: a second partition between the first region and the thirdregion in the first direction, wherein the second partition and the oneor more first pad parts comprise a same material.
 45. The displayapparatus of claim 44, wherein the first partition and the secondpartition respectively comprise different materials.
 46. The displayapparatus of claim 41, wherein the first partition has a perimeter shapecorresponding to a perimeter shape of the display panel.
 47. The displayapparatus of claim 41, wherein the first partition is configured todivide the display panel or the supporting member and includes portionsrespectively extending: in the first direction; or in the seconddirection.
 48. The display apparatus of claim 41, wherein the one ormore first pad parts extend toward the one or more sound generationdevices.
 49. The display apparatus of claim 41, wherein: the first ofthe one or more first pad parts is in the first region; and a second ofthe one or more first pad parts is in the second region.
 50. The displayapparatus of claim 41, further comprising one or more third pad partsextending toward the one or more first pad parts.
 51. The displayapparatus of claim 50, wherein a first of the one or more third padparts comprises a same material as a material of the first of the one ormore first pad parts.
 52. The display apparatus of claim 41, furthercomprising: one or more third pad parts extending toward the one or morefirst pad parts; and one or more fourth pad parts extending toward theone or more second pad parts.
 53. The display apparatus of claim 52,wherein: a first of the one or more third pad parts comprises a samematerial as a material of the first of the one or more first pad parts;and a first of the one or more fourth pad parts comprises a samematerial as a material of the first of the one or more second pad parts.54. The display apparatus of claim 41, further comprising: a secondpartition between the first region and the third region; and a thirdpartition between the second region and the third region, wherein: thefirst region is a left region of the display panel, the second region isa right region of the display panel, and the third region is a centerregion of the display panel.
 55. The display apparatus of claim 54,wherein the second partition and the third partition comprise a samematerial.
 56. The display apparatus of claim 54, wherein the firstpartition comprises a material that differs from respective materials ofthe second partition and the third partition.
 57. The display apparatusof claim 54, wherein the second partition and the third partitioncomprise a same material as a material of the first of the one or morefirst pad parts.
 58. The display apparatus of claim 54, furthercomprising: one or more first members on at least one side of the secondpartition; and one or more second members on at least one side of thethird partition.
 59. The display apparatus of claim 58, wherein a firstof the one or more first members and a first of the one or more secondmembers comprise a same material as a material of the first of the oneor more second pad parts.
 60. The display apparatus of claim 41,wherein: the first region is a left region of the display panel; thesecond region is a right region of the display panel; the third regionis a center region of the display panel; and each of an area of thefirst region and an area of the second region is greater than an area ofthe third region.
 61. The display apparatus of claim 41, wherein: afirst of the one or more sound generation devices is in the firstregion; and a second of the one or more sound generation devices is inthe second region.
 62. The display apparatus of claim 41, wherein theone or more sound generation devices are configured to vibrate thedisplay panel to generate sound.